Home / 4,253.60-6,380.40-4,080.80

Finding the Fourth Proportional to 4,253.60, 6,380.40 and 4,080.80

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Solution

The fourth proportional to 4,253.60, 6,380.40 and 4,080.80 is: 6,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,253.60 : 6,380.40 = 4,080.80 : x
  2. Step 2: Convert to fraction form
    4,253.60/6,380.40 = 4,080.80/x
  3. Step 3: Cross multiply
    4,253.60x = 6,380.40 × 4,080.80
  4. Step 4: Simplify right side
    4,253.60x = 26,037,136.32
  5. Step 5: Solve for x
    x = 26,037,136.32/4,253.60
  6. Step 6: Final answer
    x = 6,121.20

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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.