Home / 5,211.68-7,189.20-3,114.56

Finding the Fourth Proportional to 5,211.68, 7,189.20 and 3,114.56

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Solution

The fourth proportional to 5,211.68, 7,189.20 and 3,114.56 is: 4,296.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.68 : 7,189.20 = 3,114.56 : x
  2. Step 2: Convert to fraction form
    5,211.68/7,189.20 = 3,114.56/x
  3. Step 3: Cross multiply
    5,211.68x = 7,189.20 × 3,114.56
  4. Step 4: Simplify right side
    5,211.68x = 22,391,194.75
  5. Step 5: Solve for x
    x = 22,391,194.75/5,211.68
  6. Step 6: Final answer
    x = 4,296.35

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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.