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Finding the Fourth Proportional to 8,171.19, 11,276.25 and 4,445.19

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Solution

The fourth proportional to 8,171.19, 11,276.25 and 4,445.19 is: 6,134.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,171.19 : 11,276.25 = 4,445.19 : x
  2. Step 2: Convert to fraction form
    8,171.19/11,276.25 = 4,445.19/x
  3. Step 3: Cross multiply
    8,171.19x = 11,276.25 × 4,445.19
  4. Step 4: Simplify right side
    8,171.19x = 50,125,051.51
  5. Step 5: Solve for x
    x = 50,125,051.51/8,171.19
  6. Step 6: Final answer
    x = 6,134.36

Related Problems

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Half scale
Find fourth proportional to 16,342.38, 22,552.49 and 8,890.38
Double scale
Find fourth proportional to 8,172.19, 11,277.63 and 4,446.19
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.