Home / 2,748.80-4,121.65-1,187.83

Finding the Fourth Proportional to 2,748.80, 4,121.65 and 1,187.83

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Solution

The fourth proportional to 2,748.80, 4,121.65 and 1,187.83 is: 1,781.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.80 : 4,121.65 = 1,187.83 : x
  2. Step 2: Convert to fraction form
    2,748.80/4,121.65 = 1,187.83/x
  3. Step 3: Cross multiply
    2,748.80x = 4,121.65 × 1,187.83
  4. Step 4: Simplify right side
    2,748.80x = 4,895,792.97
  5. Step 5: Solve for x
    x = 4,895,792.97/2,748.80
  6. Step 6: Final answer
    x = 1,781.07

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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.