Home / 5,142.25-7,716.46-2,220.55

Finding the Fourth Proportional to 5,142.25, 7,716.46 and 2,220.55

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Solution

The fourth proportional to 5,142.25, 7,716.46 and 2,220.55 is: 3,332.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.25 : 7,716.46 = 2,220.55 : x
  2. Step 2: Convert to fraction form
    5,142.25/7,716.46 = 2,220.55/x
  3. Step 3: Cross multiply
    5,142.25x = 7,716.46 × 2,220.55
  4. Step 4: Simplify right side
    5,142.25x = 17,134,785.25
  5. Step 5: Solve for x
    x = 17,134,785.25/5,142.25
  6. Step 6: Final answer
    x = 3,332.16

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1.5x scale

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.