Home / 8,781.55-13,172.34-3,587.43

Finding the Fourth Proportional to 8,781.55, 13,172.34 and 3,587.43

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Solution

The fourth proportional to 8,781.55, 13,172.34 and 3,587.43 is: 5,381.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.55 : 13,172.34 = 3,587.43 : x
  2. Step 2: Convert to fraction form
    8,781.55/13,172.34 = 3,587.43/x
  3. Step 3: Cross multiply
    8,781.55x = 13,172.34 × 3,587.43
  4. Step 4: Simplify right side
    8,781.55x = 47,254,847.69
  5. Step 5: Solve for x
    x = 47,254,847.69/8,781.55
  6. Step 6: Final answer
    x = 5,381.15

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1.5x scale

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.