Home / 1,638.43-2,458.55-1,334.07

Finding the Fourth Proportional to 1,638.43, 2,458.55 and 1,334.07

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Solution

The fourth proportional to 1,638.43, 2,458.55 and 1,334.07 is: 2,001.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.43 : 2,458.55 = 1,334.07 : x
  2. Step 2: Convert to fraction form
    1,638.43/2,458.55 = 1,334.07/x
  3. Step 3: Cross multiply
    1,638.43x = 2,458.55 × 1,334.07
  4. Step 4: Simplify right side
    1,638.43x = 3,279,881.13
  5. Step 5: Solve for x
    x = 3,279,881.13/1,638.43
  6. Step 6: Final answer
    x = 2,001.85

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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.