Home / 9,272.49-12,789.06-6,439.87

Finding the Fourth Proportional to 9,272.49, 12,789.06 and 6,439.87

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Solution

The fourth proportional to 9,272.49, 12,789.06 and 6,439.87 is: 8,882.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,272.49 : 12,789.06 = 6,439.87 : x
  2. Step 2: Convert to fraction form
    9,272.49/12,789.06 = 6,439.87/x
  3. Step 3: Cross multiply
    9,272.49x = 12,789.06 × 6,439.87
  4. Step 4: Simplify right side
    9,272.49x = 82,359,899.92
  5. Step 5: Solve for x
    x = 82,359,899.92/9,272.49
  6. Step 6: Final answer
    x = 8,882.18

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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.