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Finding the Fourth Proportional to 8,371.62, 12,558.42 and 3,689.64

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Solution

The fourth proportional to 8,371.62, 12,558.42 and 3,689.64 is: 5,534.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,371.62 : 12,558.42 = 3,689.64 : x
  2. Step 2: Convert to fraction form
    8,371.62/12,558.42 = 3,689.64/x
  3. Step 3: Cross multiply
    8,371.62x = 12,558.42 × 3,689.64
  4. Step 4: Simplify right side
    8,371.62x = 46,336,048.77
  5. Step 5: Solve for x
    x = 46,336,048.77/8,371.62
  6. Step 6: Final answer
    x = 5,534.90

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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.