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Finding the Fourth Proportional to 8,614.44, 12,930.30 and 6,687.72

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Solution

The fourth proportional to 8,614.44, 12,930.30 and 6,687.72 is: 10,038.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,614.44 : 12,930.30 = 6,687.72 : x
  2. Step 2: Convert to fraction form
    8,614.44/12,930.30 = 6,687.72/x
  3. Step 3: Cross multiply
    8,614.44x = 12,930.30 × 6,687.72
  4. Step 4: Simplify right side
    8,614.44x = 86,474,225.92
  5. Step 5: Solve for x
    x = 86,474,225.92/8,614.44
  6. Step 6: Final answer
    x = 10,038.29

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1.5x scale

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.