Home / 10,385.16-15,577.76-3,811.88

Finding the Fourth Proportional to 10,385.16, 15,577.76 and 3,811.88

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Solution

The fourth proportional to 10,385.16, 15,577.76 and 3,811.88 is: 5,717.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,385.16 : 15,577.76 = 3,811.88 : x
  2. Step 2: Convert to fraction form
    10,385.16/15,577.76 = 3,811.88/x
  3. Step 3: Cross multiply
    10,385.16x = 15,577.76 × 3,811.88
  4. Step 4: Simplify right side
    10,385.16x = 59,380,551.79
  5. Step 5: Solve for x
    x = 59,380,551.79/10,385.16
  6. Step 6: Final answer
    x = 5,717.83

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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.