Home / 8,354.28-12,531.72-2,807.80

Finding the Fourth Proportional to 8,354.28, 12,531.72 and 2,807.80

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Solution

The fourth proportional to 8,354.28, 12,531.72 and 2,807.80 is: 4,211.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,354.28 : 12,531.72 = 2,807.80 : x
  2. Step 2: Convert to fraction form
    8,354.28/12,531.72 = 2,807.80/x
  3. Step 3: Cross multiply
    8,354.28x = 12,531.72 × 2,807.80
  4. Step 4: Simplify right side
    8,354.28x = 35,186,549.38
  5. Step 5: Solve for x
    x = 35,186,549.38/8,354.28
  6. Step 6: Final answer
    x = 4,211.80

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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.