Home / 3,918.91-5,877.18-1,578.16

Finding the Fourth Proportional to 3,918.91, 5,877.18 and 1,578.16

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Solution

The fourth proportional to 3,918.91, 5,877.18 and 1,578.16 is: 2,366.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.91 : 5,877.18 = 1,578.16 : x
  2. Step 2: Convert to fraction form
    3,918.91/5,877.18 = 1,578.16/x
  3. Step 3: Cross multiply
    3,918.91x = 5,877.18 × 1,578.16
  4. Step 4: Simplify right side
    3,918.91x = 9,275,130.39
  5. Step 5: Solve for x
    x = 9,275,130.39/3,918.91
  6. Step 6: Final answer
    x = 2,366.76

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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.