Home / 3,781.16-5,666.81-1,930.71

Finding the Fourth Proportional to 3,781.16, 5,666.81 and 1,930.71

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Solution

The fourth proportional to 3,781.16, 5,666.81 and 1,930.71 is: 2,893.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.16 : 5,666.81 = 1,930.71 : x
  2. Step 2: Convert to fraction form
    3,781.16/5,666.81 = 1,930.71/x
  3. Step 3: Cross multiply
    3,781.16x = 5,666.81 × 1,930.71
  4. Step 4: Simplify right side
    3,781.16x = 10,940,989.19
  5. Step 5: Solve for x
    x = 10,940,989.19/3,781.16
  6. Step 6: Final answer
    x = 2,893.55

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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.