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Finding the Fourth Proportional to 7,652.78, 11,475.17 and 2,721.70

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Solution

The fourth proportional to 7,652.78, 11,475.17 and 2,721.70 is: 4,081.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,652.78 : 11,475.17 = 2,721.70 : x
  2. Step 2: Convert to fraction form
    7,652.78/11,475.17 = 2,721.70/x
  3. Step 3: Cross multiply
    7,652.78x = 11,475.17 × 2,721.70
  4. Step 4: Simplify right side
    7,652.78x = 31,231,912.81
  5. Step 5: Solve for x
    x = 31,231,912.81/7,652.78
  6. Step 6: Final answer
    x = 4,081.12

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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.