Home / 2,100.13-3,148.03-1,125.97

Finding the Fourth Proportional to 2,100.13, 3,148.03 and 1,125.97

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Solution

The fourth proportional to 2,100.13, 3,148.03 and 1,125.97 is: 1,687.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,100.13 : 3,148.03 = 1,125.97 : x
  2. Step 2: Convert to fraction form
    2,100.13/3,148.03 = 1,125.97/x
  3. Step 3: Cross multiply
    2,100.13x = 3,148.03 × 1,125.97
  4. Step 4: Simplify right side
    2,100.13x = 3,544,587.34
  5. Step 5: Solve for x
    x = 3,544,587.34/2,100.13
  6. Step 6: Final answer
    x = 1,687.79

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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.