Home / 5,227.50-7,211.90-2,988.18

Finding the Fourth Proportional to 5,227.50, 7,211.90 and 2,988.18

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Solution

The fourth proportional to 5,227.50, 7,211.90 and 2,988.18 is: 4,122.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,227.50 : 7,211.90 = 2,988.18 : x
  2. Step 2: Convert to fraction form
    5,227.50/7,211.90 = 2,988.18/x
  3. Step 3: Cross multiply
    5,227.50x = 7,211.90 × 2,988.18
  4. Step 4: Simplify right side
    5,227.50x = 21,550,454.25
  5. Step 5: Solve for x
    x = 21,550,454.25/5,227.50
  6. Step 6: Final answer
    x = 4,122.51

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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.