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Finding the Fourth Proportional to 8,372.70, 12,537.45 and 6,644.70

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Solution

The fourth proportional to 8,372.70, 12,537.45 and 6,644.70 is: 9,949.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,372.70 : 12,537.45 = 6,644.70 : x
  2. Step 2: Convert to fraction form
    8,372.70/12,537.45 = 6,644.70/x
  3. Step 3: Cross multiply
    8,372.70x = 12,537.45 × 6,644.70
  4. Step 4: Simplify right side
    8,372.70x = 83,307,594.02
  5. Step 5: Solve for x
    x = 83,307,594.02/8,372.70
  6. Step 6: Final answer
    x = 9,949.91

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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.