Home / 8,353.20-12,529.77-3,422.84

Finding the Fourth Proportional to 8,353.20, 12,529.77 and 3,422.84

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Solution

The fourth proportional to 8,353.20, 12,529.77 and 3,422.84 is: 5,134.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,353.20 : 12,529.77 = 3,422.84 : x
  2. Step 2: Convert to fraction form
    8,353.20/12,529.77 = 3,422.84/x
  3. Step 3: Cross multiply
    8,353.20x = 12,529.77 × 3,422.84
  4. Step 4: Simplify right side
    8,353.20x = 42,887,397.95
  5. Step 5: Solve for x
    x = 42,887,397.95/8,353.20
  6. Step 6: Final answer
    x = 5,134.25

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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.