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Finding the Fourth Proportional to 8,841.21, 12,200.42 and 4,862.22

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Solution

The fourth proportional to 8,841.21, 12,200.42 and 4,862.22 is: 6,709.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,841.21 : 12,200.42 = 4,862.22 : x
  2. Step 2: Convert to fraction form
    8,841.21/12,200.42 = 4,862.22/x
  3. Step 3: Cross multiply
    8,841.21x = 12,200.42 × 4,862.22
  4. Step 4: Simplify right side
    8,841.21x = 59,321,101.82
  5. Step 5: Solve for x
    x = 59,321,101.82/8,841.21
  6. Step 6: Final answer
    x = 6,709.61

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Find fourth proportional to 4,420.61, 6,100.21 and 2,431.11
Half scale
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Double scale
Find fourth proportional to 8,842.21, 12,201.79 and 4,863.22
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.