Home / 3,515.90-4,862.57-3,142.22

Finding the Fourth Proportional to 3,515.90, 4,862.57 and 3,142.22

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Solution

The fourth proportional to 3,515.90, 4,862.57 and 3,142.22 is: 4,345.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.90 : 4,862.57 = 3,142.22 : x
  2. Step 2: Convert to fraction form
    3,515.90/4,862.57 = 3,142.22/x
  3. Step 3: Cross multiply
    3,515.90x = 4,862.57 × 3,142.22
  4. Step 4: Simplify right side
    3,515.90x = 15,279,224.68
  5. Step 5: Solve for x
    x = 15,279,224.68/3,515.90
  6. Step 6: Final answer
    x = 4,345.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.