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Finding the Fourth Proportional to 8,603.74, 12,910.47 and 3,672.92

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Solution

The fourth proportional to 8,603.74, 12,910.47 and 3,672.92 is: 5,511.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.74 : 12,910.47 = 3,672.92 : x
  2. Step 2: Convert to fraction form
    8,603.74/12,910.47 = 3,672.92/x
  3. Step 3: Cross multiply
    8,603.74x = 12,910.47 × 3,672.92
  4. Step 4: Simplify right side
    8,603.74x = 47,419,123.47
  5. Step 5: Solve for x
    x = 47,419,123.47/8,603.74
  6. Step 6: Final answer
    x = 5,511.45

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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.