Home / 5,319.79-7,340.20-3,081.54

Finding the Fourth Proportional to 5,319.79, 7,340.20 and 3,081.54

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Solution

The fourth proportional to 5,319.79, 7,340.20 and 3,081.54 is: 4,251.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.79 : 7,340.20 = 3,081.54 : x
  2. Step 2: Convert to fraction form
    5,319.79/7,340.20 = 3,081.54/x
  3. Step 3: Cross multiply
    5,319.79x = 7,340.20 × 3,081.54
  4. Step 4: Simplify right side
    5,319.79x = 22,619,119.91
  5. Step 5: Solve for x
    x = 22,619,119.91/5,319.79
  6. Step 6: Final answer
    x = 4,251.88

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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.