Home / 1,521.88-2,100.10-932.30

Finding the Fourth Proportional to 1,521.88, 2,100.10 and 932.30

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Solution

The fourth proportional to 1,521.88, 2,100.10 and 932.30 is: 1,286.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.88 : 2,100.10 = 932.30 : x
  2. Step 2: Convert to fraction form
    1,521.88/2,100.10 = 932.30/x
  3. Step 3: Cross multiply
    1,521.88x = 2,100.10 × 932.30
  4. Step 4: Simplify right side
    1,521.88x = 1,957,923.23
  5. Step 5: Solve for x
    x = 1,957,923.23/1,521.88
  6. Step 6: Final answer
    x = 1,286.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.