Home / 1,638.85-2,262.38-1,049.72

Finding the Fourth Proportional to 1,638.85, 2,262.38 and 1,049.72

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Solution

The fourth proportional to 1,638.85, 2,262.38 and 1,049.72 is: 1,449.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.85 : 2,262.38 = 1,049.72 : x
  2. Step 2: Convert to fraction form
    1,638.85/2,262.38 = 1,049.72/x
  3. Step 3: Cross multiply
    1,638.85x = 2,262.38 × 1,049.72
  4. Step 4: Simplify right side
    1,638.85x = 2,374,865.53
  5. Step 5: Solve for x
    x = 2,374,865.53/1,638.85
  6. Step 6: Final answer
    x = 1,449.10

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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.