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Finding the Fourth Proportional to 7,614.79, 10,508.20 and 4,257.61

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Solution

The fourth proportional to 7,614.79, 10,508.20 and 4,257.61 is: 5,875.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,614.79 : 10,508.20 = 4,257.61 : x
  2. Step 2: Convert to fraction form
    7,614.79/10,508.20 = 4,257.61/x
  3. Step 3: Cross multiply
    7,614.79x = 10,508.20 × 4,257.61
  4. Step 4: Simplify right side
    7,614.79x = 44,739,817.40
  5. Step 5: Solve for x
    x = 44,739,817.40/7,614.79
  6. Step 6: Final answer
    x = 5,875.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.