Home / 1,521.59-2,280.38-741.89

Finding the Fourth Proportional to 1,521.59, 2,280.38 and 741.89

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Solution

The fourth proportional to 1,521.59, 2,280.38 and 741.89 is: 1,111.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.59 : 2,280.38 = 741.89 : x
  2. Step 2: Convert to fraction form
    1,521.59/2,280.38 = 741.89/x
  3. Step 3: Cross multiply
    1,521.59x = 2,280.38 × 741.89
  4. Step 4: Simplify right side
    1,521.59x = 1,691,776.01
  5. Step 5: Solve for x
    x = 1,691,776.01/1,521.59
  6. Step 6: Final answer
    x = 1,111.85

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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.