Home / 1,454.13-2,180.48-724.12

Finding the Fourth Proportional to 1,454.13, 2,180.48 and 724.12

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Solution

The fourth proportional to 1,454.13, 2,180.48 and 724.12 is: 1,085.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.13 : 2,180.48 = 724.12 : x
  2. Step 2: Convert to fraction form
    1,454.13/2,180.48 = 724.12/x
  3. Step 3: Cross multiply
    1,454.13x = 2,180.48 × 724.12
  4. Step 4: Simplify right side
    1,454.13x = 1,578,929.18
  5. Step 5: Solve for x
    x = 1,578,929.18/1,454.13
  6. Step 6: Final answer
    x = 1,085.82

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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.