Home / 3,616.10-5,422.80-1,275.20

Finding the Fourth Proportional to 3,616.10, 5,422.80 and 1,275.20

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Solution

The fourth proportional to 3,616.10, 5,422.80 and 1,275.20 is: 1,912.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,616.10 : 5,422.80 = 1,275.20 : x
  2. Step 2: Convert to fraction form
    3,616.10/5,422.80 = 1,275.20/x
  3. Step 3: Cross multiply
    3,616.10x = 5,422.80 × 1,275.20
  4. Step 4: Simplify right side
    3,616.10x = 6,915,154.56
  5. Step 5: Solve for x
    x = 6,915,154.56/3,616.10
  6. Step 6: Final answer
    x = 1,912.32

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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.