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Finding the Fourth Proportional to 8,575.58, 12,865.36 and 3,645.38

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Solution

The fourth proportional to 8,575.58, 12,865.36 and 3,645.38 is: 5,468.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,575.58 : 12,865.36 = 3,645.38 : x
  2. Step 2: Convert to fraction form
    8,575.58/12,865.36 = 3,645.38/x
  3. Step 3: Cross multiply
    8,575.58x = 12,865.36 × 3,645.38
  4. Step 4: Simplify right side
    8,575.58x = 46,899,126.04
  5. Step 5: Solve for x
    x = 46,899,126.04/8,575.58
  6. Step 6: Final answer
    x = 5,468.92

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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.