Home / 1,542.11-2,313.72-1,280.88

Finding the Fourth Proportional to 1,542.11, 2,313.72 and 1,280.88

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Solution

The fourth proportional to 1,542.11, 2,313.72 and 1,280.88 is: 1,921.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.11 : 2,313.72 = 1,280.88 : x
  2. Step 2: Convert to fraction form
    1,542.11/2,313.72 = 1,280.88/x
  3. Step 3: Cross multiply
    1,542.11x = 2,313.72 × 1,280.88
  4. Step 4: Simplify right side
    1,542.11x = 2,963,597.67
  5. Step 5: Solve for x
    x = 2,963,597.67/1,542.11
  6. Step 6: Final answer
    x = 1,921.79

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1.5x scale

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.