Home / 3,918.20-5,877.23-1,578.15

Finding the Fourth Proportional to 3,918.20, 5,877.23 and 1,578.15

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Solution

The fourth proportional to 3,918.20, 5,877.23 and 1,578.15 is: 2,367.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.20 : 5,877.23 = 1,578.15 : x
  2. Step 2: Convert to fraction form
    3,918.20/5,877.23 = 1,578.15/x
  3. Step 3: Cross multiply
    3,918.20x = 5,877.23 × 1,578.15
  4. Step 4: Simplify right side
    3,918.20x = 9,275,132.43
  5. Step 5: Solve for x
    x = 9,275,132.43/3,918.20
  6. Step 6: Final answer
    x = 2,367.19

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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.