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Finding the Fourth Proportional to 8,113.92, 11,197.21 and 4,387.92

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Solution

The fourth proportional to 8,113.92, 11,197.21 and 4,387.92 is: 6,055.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,113.92 : 11,197.21 = 4,387.92 : x
  2. Step 2: Convert to fraction form
    8,113.92/11,197.21 = 4,387.92/x
  3. Step 3: Cross multiply
    8,113.92x = 11,197.21 × 4,387.92
  4. Step 4: Simplify right side
    8,113.92x = 49,132,492.30
  5. Step 5: Solve for x
    x = 49,132,492.30/8,113.92
  6. Step 6: Final answer
    x = 6,055.33

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Find fourth proportional to 4,056.96, 5,598.61 and 2,193.96
Half scale
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Double scale
Find fourth proportional to 8,114.92, 11,198.59 and 4,388.92
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.