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Finding the Fourth Proportional to 8,557.32, 12,835.80 and 2,713.80

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Solution

The fourth proportional to 8,557.32, 12,835.80 and 2,713.80 is: 4,070.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,557.32 : 12,835.80 = 2,713.80 : x
  2. Step 2: Convert to fraction form
    8,557.32/12,835.80 = 2,713.80/x
  3. Step 3: Cross multiply
    8,557.32x = 12,835.80 × 2,713.80
  4. Step 4: Simplify right side
    8,557.32x = 34,833,794.04
  5. Step 5: Solve for x
    x = 34,833,794.04/8,557.32
  6. Step 6: Final answer
    x = 4,070.64

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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.