Home / 1,521.26-2,281.56-481.34

Finding the Fourth Proportional to 1,521.26, 2,281.56 and 481.34

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Solution

The fourth proportional to 1,521.26, 2,281.56 and 481.34 is: 721.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.26 : 2,281.56 = 481.34 : x
  2. Step 2: Convert to fraction form
    1,521.26/2,281.56 = 481.34/x
  3. Step 3: Cross multiply
    1,521.26x = 2,281.56 × 481.34
  4. Step 4: Simplify right side
    1,521.26x = 1,098,206.09
  5. Step 5: Solve for x
    x = 1,098,206.09/1,521.26
  6. Step 6: Final answer
    x = 721.91

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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.