Home / 5,715.22-7,887.18-3,197.43

Finding the Fourth Proportional to 5,715.22, 7,887.18 and 3,197.43

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Solution

The fourth proportional to 5,715.22, 7,887.18 and 3,197.43 is: 4,412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.22 : 7,887.18 = 3,197.43 : x
  2. Step 2: Convert to fraction form
    5,715.22/7,887.18 = 3,197.43/x
  3. Step 3: Cross multiply
    5,715.22x = 7,887.18 × 3,197.43
  4. Step 4: Simplify right side
    5,715.22x = 25,218,705.95
  5. Step 5: Solve for x
    x = 25,218,705.95/5,715.22
  6. Step 6: Final answer
    x = 4,412.55

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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.