Home / 10,385.52-15,575.04-3,812.20

Finding the Fourth Proportional to 10,385.52, 15,575.04 and 3,812.20

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Solution

The fourth proportional to 10,385.52, 15,575.04 and 3,812.20 is: 5,717.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,385.52 : 15,575.04 = 3,812.20 : x
  2. Step 2: Convert to fraction form
    10,385.52/15,575.04 = 3,812.20/x
  3. Step 3: Cross multiply
    10,385.52x = 15,575.04 × 3,812.20
  4. Step 4: Simplify right side
    10,385.52x = 59,375,167.49
  5. Step 5: Solve for x
    x = 59,375,167.49/10,385.52
  6. Step 6: Final answer
    x = 5,717.11

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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.