Home / 8,781.50-13,172.26-3,587.38

Finding the Fourth Proportional to 8,781.50, 13,172.26 and 3,587.38

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Solution

The fourth proportional to 8,781.50, 13,172.26 and 3,587.38 is: 5,381.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.50 : 13,172.26 = 3,587.38 : x
  2. Step 2: Convert to fraction form
    8,781.50/13,172.26 = 3,587.38/x
  3. Step 3: Cross multiply
    8,781.50x = 13,172.26 × 3,587.38
  4. Step 4: Simplify right side
    8,781.50x = 47,253,836.22
  5. Step 5: Solve for x
    x = 47,253,836.22/8,781.50
  6. Step 6: Final answer
    x = 5,381.07

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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.