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Finding the Fourth Proportional to 8,397.72, 12,585.02 and 3,889.49

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Solution

The fourth proportional to 8,397.72, 12,585.02 and 3,889.49 is: 5,828.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,397.72 : 12,585.02 = 3,889.49 : x
  2. Step 2: Convert to fraction form
    8,397.72/12,585.02 = 3,889.49/x
  3. Step 3: Cross multiply
    8,397.72x = 12,585.02 × 3,889.49
  4. Step 4: Simplify right side
    8,397.72x = 48,949,227.07
  5. Step 5: Solve for x
    x = 48,949,227.07/8,397.72
  6. Step 6: Final answer
    x = 5,828.87

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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.