Home / 8,437.91-12,663.20-3,178.11

Finding the Fourth Proportional to 8,437.91, 12,663.20 and 3,178.11

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Solution

The fourth proportional to 8,437.91, 12,663.20 and 3,178.11 is: 4,769.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,437.91 : 12,663.20 = 3,178.11 : x
  2. Step 2: Convert to fraction form
    8,437.91/12,663.20 = 3,178.11/x
  3. Step 3: Cross multiply
    8,437.91x = 12,663.20 × 3,178.11
  4. Step 4: Simplify right side
    8,437.91x = 40,245,042.55
  5. Step 5: Solve for x
    x = 40,245,042.55/8,437.91
  6. Step 6: Final answer
    x = 4,769.55

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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.