Home / 8,517.20-12,775.80-2,361.20

Finding the Fourth Proportional to 8,517.20, 12,775.80 and 2,361.20

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Solution

The fourth proportional to 8,517.20, 12,775.80 and 2,361.20 is: 3,541.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,517.20 : 12,775.80 = 2,361.20 : x
  2. Step 2: Convert to fraction form
    8,517.20/12,775.80 = 2,361.20/x
  3. Step 3: Cross multiply
    8,517.20x = 12,775.80 × 2,361.20
  4. Step 4: Simplify right side
    8,517.20x = 30,166,155.08
  5. Step 5: Solve for x
    x = 30,166,155.08/8,517.20
  6. Step 6: Final answer
    x = 3,541.79

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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.