Home / 7,042.92-9,719.28-3,856.18

Finding the Fourth Proportional to 7,042.92, 9,719.28 and 3,856.18

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Solution

The fourth proportional to 7,042.92, 9,719.28 and 3,856.18 is: 5,321.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,042.92 : 9,719.28 = 3,856.18 : x
  2. Step 2: Convert to fraction form
    7,042.92/9,719.28 = 3,856.18/x
  3. Step 3: Cross multiply
    7,042.92x = 9,719.28 × 3,856.18
  4. Step 4: Simplify right side
    7,042.92x = 37,479,293.15
  5. Step 5: Solve for x
    x = 37,479,293.15/7,042.92
  6. Step 6: Final answer
    x = 5,321.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.