Home / 1,521.47-2,280.85-547.36

Finding the Fourth Proportional to 1,521.47, 2,280.85 and 547.36

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Solution

The fourth proportional to 1,521.47, 2,280.85 and 547.36 is: 820.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.47 : 2,280.85 = 547.36 : x
  2. Step 2: Convert to fraction form
    1,521.47/2,280.85 = 547.36/x
  3. Step 3: Cross multiply
    1,521.47x = 2,280.85 × 547.36
  4. Step 4: Simplify right side
    1,521.47x = 1,248,438.99
  5. Step 5: Solve for x
    x = 1,248,438.99/1,521.47
  6. Step 6: Final answer
    x = 820.55

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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.