Home / 7,943.39-11,916.18-2,679.90

Finding the Fourth Proportional to 7,943.39, 11,916.18 and 2,679.90

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Solution

The fourth proportional to 7,943.39, 11,916.18 and 2,679.90 is: 4,020.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.39 : 11,916.18 = 2,679.90 : x
  2. Step 2: Convert to fraction form
    7,943.39/11,916.18 = 2,679.90/x
  3. Step 3: Cross multiply
    7,943.39x = 11,916.18 × 2,679.90
  4. Step 4: Simplify right side
    7,943.39x = 31,934,170.78
  5. Step 5: Solve for x
    x = 31,934,170.78/7,943.39
  6. Step 6: Final answer
    x = 4,020.22

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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.