Home / 1,521.71-2,281.19-547.13

Finding the Fourth Proportional to 1,521.71, 2,281.19 and 547.13

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Solution

The fourth proportional to 1,521.71, 2,281.19 and 547.13 is: 820.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.71 : 2,281.19 = 547.13 : x
  2. Step 2: Convert to fraction form
    1,521.71/2,281.19 = 547.13/x
  3. Step 3: Cross multiply
    1,521.71x = 2,281.19 × 547.13
  4. Step 4: Simplify right side
    1,521.71x = 1,248,097.45
  5. Step 5: Solve for x
    x = 1,248,097.45/1,521.71
  6. Step 6: Final answer
    x = 820.19

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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.