Home / 2,748.39-4,121.32-1,187.65

Finding the Fourth Proportional to 2,748.39, 4,121.32 and 1,187.65

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Solution

The fourth proportional to 2,748.39, 4,121.32 and 1,187.65 is: 1,780.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.39 : 4,121.32 = 1,187.65 : x
  2. Step 2: Convert to fraction form
    2,748.39/4,121.32 = 1,187.65/x
  3. Step 3: Cross multiply
    2,748.39x = 4,121.32 × 1,187.65
  4. Step 4: Simplify right side
    2,748.39x = 4,894,685.70
  5. Step 5: Solve for x
    x = 4,894,685.70/2,748.39
  6. Step 6: Final answer
    x = 1,780.93

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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.