Home / 1,542.16-2,313.20-387.92

Finding the Fourth Proportional to 1,542.16, 2,313.20 and 387.92

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Solution

The fourth proportional to 1,542.16, 2,313.20 and 387.92 is: 581.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.16 : 2,313.20 = 387.92 : x
  2. Step 2: Convert to fraction form
    1,542.16/2,313.20 = 387.92/x
  3. Step 3: Cross multiply
    1,542.16x = 2,313.20 × 387.92
  4. Step 4: Simplify right side
    1,542.16x = 897,336.54
  5. Step 5: Solve for x
    x = 897,336.54/1,542.16
  6. Step 6: Final answer
    x = 581.87

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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.