Home / 8,319.09-12,475.17-3,385.38

Finding the Fourth Proportional to 8,319.09, 12,475.17 and 3,385.38

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Solution

The fourth proportional to 8,319.09, 12,475.17 and 3,385.38 is: 5,076.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.09 : 12,475.17 = 3,385.38 : x
  2. Step 2: Convert to fraction form
    8,319.09/12,475.17 = 3,385.38/x
  3. Step 3: Cross multiply
    8,319.09x = 12,475.17 × 3,385.38
  4. Step 4: Simplify right side
    8,319.09x = 42,233,191.01
  5. Step 5: Solve for x
    x = 42,233,191.01/8,319.09
  6. Step 6: Final answer
    x = 5,076.66

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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.