Home / 1,638.38-2,248.25-1,489.88

Finding the Fourth Proportional to 1,638.38, 2,248.25 and 1,489.88

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Solution

The fourth proportional to 1,638.38, 2,248.25 and 1,489.88 is: 2,044.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.38 : 2,248.25 = 1,489.88 : x
  2. Step 2: Convert to fraction form
    1,638.38/2,248.25 = 1,489.88/x
  3. Step 3: Cross multiply
    1,638.38x = 2,248.25 × 1,489.88
  4. Step 4: Simplify right side
    1,638.38x = 3,349,632.06
  5. Step 5: Solve for x
    x = 3,349,632.06/1,638.38
  6. Step 6: Final answer
    x = 2,044.47

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.