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Finding the Fourth Proportional to 8,538.72, 12,808.36 and 3,608.52

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Solution

The fourth proportional to 8,538.72, 12,808.36 and 3,608.52 is: 5,412.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,538.72 : 12,808.36 = 3,608.52 : x
  2. Step 2: Convert to fraction form
    8,538.72/12,808.36 = 3,608.52/x
  3. Step 3: Cross multiply
    8,538.72x = 12,808.36 × 3,608.52
  4. Step 4: Simplify right side
    8,538.72x = 46,219,223.23
  5. Step 5: Solve for x
    x = 46,219,223.23/8,538.72
  6. Step 6: Final answer
    x = 5,412.90

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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.