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Finding the Fourth Proportional to 5,292.71, 7,923.48 and 3,912.20

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Solution

The fourth proportional to 5,292.71, 7,923.48 and 3,912.20 is: 5,856.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,292.71 : 7,923.48 = 3,912.20 : x
  2. Step 2: Convert to fraction form
    5,292.71/7,923.48 = 3,912.20/x
  3. Step 3: Cross multiply
    5,292.71x = 7,923.48 × 3,912.20
  4. Step 4: Simplify right side
    5,292.71x = 30,998,238.46
  5. Step 5: Solve for x
    x = 30,998,238.46/5,292.71
  6. Step 6: Final answer
    x = 5,856.78

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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.