Home / 3,781.92-5,672.89-1,186.68

Finding the Fourth Proportional to 3,781.92, 5,672.89 and 1,186.68

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Solution

The fourth proportional to 3,781.92, 5,672.89 and 1,186.68 is: 1,780.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.92 : 5,672.89 = 1,186.68 : x
  2. Step 2: Convert to fraction form
    3,781.92/5,672.89 = 1,186.68/x
  3. Step 3: Cross multiply
    3,781.92x = 5,672.89 × 1,186.68
  4. Step 4: Simplify right side
    3,781.92x = 6,731,921.19
  5. Step 5: Solve for x
    x = 6,731,921.19/3,781.92
  6. Step 6: Final answer
    x = 1,780.03

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1.5x scale

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.