Home / 5,211.26-7,190.89-4,151.72

Finding the Fourth Proportional to 5,211.26, 7,190.89 and 4,151.72

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Solution

The fourth proportional to 5,211.26, 7,190.89 and 4,151.72 is: 5,728.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.26 : 7,190.89 = 4,151.72 : x
  2. Step 2: Convert to fraction form
    5,211.26/7,190.89 = 4,151.72/x
  3. Step 3: Cross multiply
    5,211.26x = 7,190.89 × 4,151.72
  4. Step 4: Simplify right side
    5,211.26x = 29,854,505.12
  5. Step 5: Solve for x
    x = 29,854,505.12/5,211.26
  6. Step 6: Final answer
    x = 5,728.85

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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.