Home / 1,521.19-2,281.79-547.23

Finding the Fourth Proportional to 1,521.19, 2,281.79 and 547.23

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Solution

The fourth proportional to 1,521.19, 2,281.79 and 547.23 is: 820.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.19 : 2,281.79 = 547.23 : x
  2. Step 2: Convert to fraction form
    1,521.19/2,281.79 = 547.23/x
  3. Step 3: Cross multiply
    1,521.19x = 2,281.79 × 547.23
  4. Step 4: Simplify right side
    1,521.19x = 1,248,663.94
  5. Step 5: Solve for x
    x = 1,248,663.94/1,521.19
  6. Step 6: Final answer
    x = 820.85

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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.