Home / 5,278.60-7,910.61-5,120.92

Finding the Fourth Proportional to 5,278.60, 7,910.61 and 5,120.92

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Solution

The fourth proportional to 5,278.60, 7,910.61 and 5,120.92 is: 7,674.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.60 : 7,910.61 = 5,120.92 : x
  2. Step 2: Convert to fraction form
    5,278.60/7,910.61 = 5,120.92/x
  3. Step 3: Cross multiply
    5,278.60x = 7,910.61 × 5,120.92
  4. Step 4: Simplify right side
    5,278.60x = 40,509,600.96
  5. Step 5: Solve for x
    x = 40,509,600.96/5,278.60
  6. Step 6: Final answer
    x = 7,674.31

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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.