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Finding the Fourth Proportional to 5,251.86, 7,867.98 and 2,616.39

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Solution

The fourth proportional to 5,251.86, 7,867.98 and 2,616.39 is: 3,919.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.86 : 7,867.98 = 2,616.39 : x
  2. Step 2: Convert to fraction form
    5,251.86/7,867.98 = 2,616.39/x
  3. Step 3: Cross multiply
    5,251.86x = 7,867.98 × 2,616.39
  4. Step 4: Simplify right side
    5,251.86x = 20,585,704.19
  5. Step 5: Solve for x
    x = 20,585,704.19/5,251.86
  6. Step 6: Final answer
    x = 3,919.70

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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.