Home / 1,988.72-2,744.45-1,104.61

Finding the Fourth Proportional to 1,988.72, 2,744.45 and 1,104.61

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Solution

The fourth proportional to 1,988.72, 2,744.45 and 1,104.61 is: 1,524.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.72 : 2,744.45 = 1,104.61 : x
  2. Step 2: Convert to fraction form
    1,988.72/2,744.45 = 1,104.61/x
  3. Step 3: Cross multiply
    1,988.72x = 2,744.45 × 1,104.61
  4. Step 4: Simplify right side
    1,988.72x = 3,031,546.91
  5. Step 5: Solve for x
    x = 3,031,546.91/1,988.72
  6. Step 6: Final answer
    x = 1,524.37

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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.