Home / 1,542.06-2,314.73-721.12

Finding the Fourth Proportional to 1,542.06, 2,314.73 and 721.12

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Solution

The fourth proportional to 1,542.06, 2,314.73 and 721.12 is: 1,082.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.06 : 2,314.73 = 721.12 : x
  2. Step 2: Convert to fraction form
    1,542.06/2,314.73 = 721.12/x
  3. Step 3: Cross multiply
    1,542.06x = 2,314.73 × 721.12
  4. Step 4: Simplify right side
    1,542.06x = 1,669,198.10
  5. Step 5: Solve for x
    x = 1,669,198.10/1,542.06
  6. Step 6: Final answer
    x = 1,082.45

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Double scale
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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.