Home / 3,918.81-5,876.73-1,578.02

Finding the Fourth Proportional to 3,918.81, 5,876.73 and 1,578.02

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Solution

The fourth proportional to 3,918.81, 5,876.73 and 1,578.02 is: 2,366.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.81 : 5,876.73 = 1,578.02 : x
  2. Step 2: Convert to fraction form
    3,918.81/5,876.73 = 1,578.02/x
  3. Step 3: Cross multiply
    3,918.81x = 5,876.73 × 1,578.02
  4. Step 4: Simplify right side
    3,918.81x = 9,273,560.20
  5. Step 5: Solve for x
    x = 9,273,560.20/3,918.81
  6. Step 6: Final answer
    x = 2,366.43

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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.