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Finding the Fourth Proportional to 6,439.68, 9,658.98 and 4,372.97

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Solution

The fourth proportional to 6,439.68, 9,658.98 and 4,372.97 is: 6,559.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.68 : 9,658.98 = 4,372.97 : x
  2. Step 2: Convert to fraction form
    6,439.68/9,658.98 = 4,372.97/x
  3. Step 3: Cross multiply
    6,439.68x = 9,658.98 × 4,372.97
  4. Step 4: Simplify right side
    6,439.68x = 42,238,381.48
  5. Step 5: Solve for x
    x = 42,238,381.48/6,439.68
  6. Step 6: Final answer
    x = 6,559.08

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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.