Home / 8,177.27-12,255.10-2,978.15

Finding the Fourth Proportional to 8,177.27, 12,255.10 and 2,978.15

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Solution

The fourth proportional to 8,177.27, 12,255.10 and 2,978.15 is: 4,463.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,177.27 : 12,255.10 = 2,978.15 : x
  2. Step 2: Convert to fraction form
    8,177.27/12,255.10 = 2,978.15/x
  3. Step 3: Cross multiply
    8,177.27x = 12,255.10 × 2,978.15
  4. Step 4: Simplify right side
    8,177.27x = 36,497,457.34
  5. Step 5: Solve for x
    x = 36,497,457.34/8,177.27
  6. Step 6: Final answer
    x = 4,463.28

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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.