Home / 5,319.88-7,339.92-3,081.76

Finding the Fourth Proportional to 5,319.88, 7,339.92 and 3,081.76

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Solution

The fourth proportional to 5,319.88, 7,339.92 and 3,081.76 is: 4,251.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.88 : 7,339.92 = 3,081.76 : x
  2. Step 2: Convert to fraction form
    5,319.88/7,339.92 = 3,081.76/x
  3. Step 3: Cross multiply
    5,319.88x = 7,339.92 × 3,081.76
  4. Step 4: Simplify right side
    5,319.88x = 22,619,871.86
  5. Step 5: Solve for x
    x = 22,619,871.86/5,319.88
  6. Step 6: Final answer
    x = 4,251.95

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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.