Home / 8,781.10-13,172.32-2,937.72

Finding the Fourth Proportional to 8,781.10, 13,172.32 and 2,937.72

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Solution

The fourth proportional to 8,781.10, 13,172.32 and 2,937.72 is: 4,406.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.10 : 13,172.32 = 2,937.72 : x
  2. Step 2: Convert to fraction form
    8,781.10/13,172.32 = 2,937.72/x
  3. Step 3: Cross multiply
    8,781.10x = 13,172.32 × 2,937.72
  4. Step 4: Simplify right side
    8,781.10x = 38,696,587.91
  5. Step 5: Solve for x
    x = 38,696,587.91/8,781.10
  6. Step 6: Final answer
    x = 4,406.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.