Home / 8,728.31-13,092.28-2,154.55

Finding the Fourth Proportional to 8,728.31, 13,092.28 and 2,154.55

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Solution

The fourth proportional to 8,728.31, 13,092.28 and 2,154.55 is: 3,231.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.31 : 13,092.28 = 2,154.55 : x
  2. Step 2: Convert to fraction form
    8,728.31/13,092.28 = 2,154.55/x
  3. Step 3: Cross multiply
    8,728.31x = 13,092.28 × 2,154.55
  4. Step 4: Simplify right side
    8,728.31x = 28,207,970.42
  5. Step 5: Solve for x
    x = 28,207,970.42/8,728.31
  6. Step 6: Final answer
    x = 3,231.78

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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.