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Finding the Fourth Proportional to 3,172.65, 4,753.01 and 2,655.96

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Solution

The fourth proportional to 3,172.65, 4,753.01 and 2,655.96 is: 3,978.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.65 : 4,753.01 = 2,655.96 : x
  2. Step 2: Convert to fraction form
    3,172.65/4,753.01 = 2,655.96/x
  3. Step 3: Cross multiply
    3,172.65x = 4,753.01 × 2,655.96
  4. Step 4: Simplify right side
    3,172.65x = 12,623,780.67
  5. Step 5: Solve for x
    x = 12,623,780.67/3,172.65
  6. Step 6: Final answer
    x = 3,978.95

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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.