Home / 3,015.60-4,520.70-2,687.55

Finding the Fourth Proportional to 3,015.60, 4,520.70 and 2,687.55

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Solution

The fourth proportional to 3,015.60, 4,520.70 and 2,687.55 is: 4,028.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.60 : 4,520.70 = 2,687.55 : x
  2. Step 2: Convert to fraction form
    3,015.60/4,520.70 = 2,687.55/x
  3. Step 3: Cross multiply
    3,015.60x = 4,520.70 × 2,687.55
  4. Step 4: Simplify right side
    3,015.60x = 12,149,607.29
  5. Step 5: Solve for x
    x = 12,149,607.29/3,015.60
  6. Step 6: Final answer
    x = 4,028.92

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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.