Home / 5,292.38-7,938.01-2,172.72

Finding the Fourth Proportional to 5,292.38, 7,938.01 and 2,172.72

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Solution

The fourth proportional to 5,292.38, 7,938.01 and 2,172.72 is: 3,258.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,292.38 : 7,938.01 = 2,172.72 : x
  2. Step 2: Convert to fraction form
    5,292.38/7,938.01 = 2,172.72/x
  3. Step 3: Cross multiply
    5,292.38x = 7,938.01 × 2,172.72
  4. Step 4: Simplify right side
    5,292.38x = 17,247,073.09
  5. Step 5: Solve for x
    x = 17,247,073.09/5,292.38
  6. Step 6: Final answer
    x = 3,258.85

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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.