Home / 5,247.21-7,240.23-3,151.38

Finding the Fourth Proportional to 5,247.21, 7,240.23 and 3,151.38

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Solution

The fourth proportional to 5,247.21, 7,240.23 and 3,151.38 is: 4,348.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.21 : 7,240.23 = 3,151.38 : x
  2. Step 2: Convert to fraction form
    5,247.21/7,240.23 = 3,151.38/x
  3. Step 3: Cross multiply
    5,247.21x = 7,240.23 × 3,151.38
  4. Step 4: Simplify right side
    5,247.21x = 22,816,716.02
  5. Step 5: Solve for x
    x = 22,816,716.02/5,247.21
  6. Step 6: Final answer
    x = 4,348.35

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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.