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Finding the Fourth Proportional to 8,391.62, 12,583.31 and 3,463.70

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Solution

The fourth proportional to 8,391.62, 12,583.31 and 3,463.70 is: 5,193.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.62 : 12,583.31 = 3,463.70 : x
  2. Step 2: Convert to fraction form
    8,391.62/12,583.31 = 3,463.70/x
  3. Step 3: Cross multiply
    8,391.62x = 12,583.31 × 3,463.70
  4. Step 4: Simplify right side
    8,391.62x = 43,584,810.85
  5. Step 5: Solve for x
    x = 43,584,810.85/8,391.62
  6. Step 6: Final answer
    x = 5,193.85

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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.