Home / 3,459.60-4,777.20-2,134.80

Finding the Fourth Proportional to 3,459.60, 4,777.20 and 2,134.80

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Solution

The fourth proportional to 3,459.60, 4,777.20 and 2,134.80 is: 2,947.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.60 : 4,777.20 = 2,134.80 : x
  2. Step 2: Convert to fraction form
    3,459.60/4,777.20 = 2,134.80/x
  3. Step 3: Cross multiply
    3,459.60x = 4,777.20 × 2,134.80
  4. Step 4: Simplify right side
    3,459.60x = 10,198,366.56
  5. Step 5: Solve for x
    x = 10,198,366.56/3,459.60
  6. Step 6: Final answer
    x = 2,947.85

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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.