Home / 2,685.60-4,028.40-2,276.55

Finding the Fourth Proportional to 2,685.60, 4,028.40 and 2,276.55

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Solution

The fourth proportional to 2,685.60, 4,028.40 and 2,276.55 is: 3,414.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.60 : 4,028.40 = 2,276.55 : x
  2. Step 2: Convert to fraction form
    2,685.60/4,028.40 = 2,276.55/x
  3. Step 3: Cross multiply
    2,685.60x = 4,028.40 × 2,276.55
  4. Step 4: Simplify right side
    2,685.60x = 9,170,854.02
  5. Step 5: Solve for x
    x = 9,170,854.02/2,685.60
  6. Step 6: Final answer
    x = 3,414.83

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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.