Home / 1,521.16-2,100.30-932.48

Finding the Fourth Proportional to 1,521.16, 2,100.30 and 932.48

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Solution

The fourth proportional to 1,521.16, 2,100.30 and 932.48 is: 1,287.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.16 : 2,100.30 = 932.48 : x
  2. Step 2: Convert to fraction form
    1,521.16/2,100.30 = 932.48/x
  3. Step 3: Cross multiply
    1,521.16x = 2,100.30 × 932.48
  4. Step 4: Simplify right side
    1,521.16x = 1,958,487.74
  5. Step 5: Solve for x
    x = 1,958,487.74/1,521.16
  6. Step 6: Final answer
    x = 1,287.50

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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.