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Finding the Fourth Proportional to 5,211.97, 7,819.74 and 2,868.99

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Solution

The fourth proportional to 5,211.97, 7,819.74 and 2,868.99 is: 4,304.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.97 : 7,819.74 = 2,868.99 : x
  2. Step 2: Convert to fraction form
    5,211.97/7,819.74 = 2,868.99/x
  3. Step 3: Cross multiply
    5,211.97x = 7,819.74 × 2,868.99
  4. Step 4: Simplify right side
    5,211.97x = 22,434,792.52
  5. Step 5: Solve for x
    x = 22,434,792.52/5,211.97
  6. Step 6: Final answer
    x = 4,304.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.