Home / 1,551.12-2,324.24-729.20

Finding the Fourth Proportional to 1,551.12, 2,324.24 and 729.20

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Solution

The fourth proportional to 1,551.12, 2,324.24 and 729.20 is: 1,092.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.12 : 2,324.24 = 729.20 : x
  2. Step 2: Convert to fraction form
    1,551.12/2,324.24 = 729.20/x
  3. Step 3: Cross multiply
    1,551.12x = 2,324.24 × 729.20
  4. Step 4: Simplify right side
    1,551.12x = 1,694,835.81
  5. Step 5: Solve for x
    x = 1,694,835.81/1,551.12
  6. Step 6: Final answer
    x = 1,092.65

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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.