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Finding the Fourth Proportional to 8,584.32, 12,875.20 and 3,393.76

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Solution

The fourth proportional to 8,584.32, 12,875.20 and 3,393.76 is: 5,090.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,584.32 : 12,875.20 = 3,393.76 : x
  2. Step 2: Convert to fraction form
    8,584.32/12,875.20 = 3,393.76/x
  3. Step 3: Cross multiply
    8,584.32x = 12,875.20 × 3,393.76
  4. Step 4: Simplify right side
    8,584.32x = 43,695,338.75
  5. Step 5: Solve for x
    x = 43,695,338.75/8,584.32
  6. Step 6: Final answer
    x = 5,090.13

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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.