Home / 8,912.60-13,361.37-5,618.43

Finding the Fourth Proportional to 8,912.60, 13,361.37 and 5,618.43

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Solution

The fourth proportional to 8,912.60, 13,361.37 and 5,618.43 is: 8,422.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.60 : 13,361.37 = 5,618.43 : x
  2. Step 2: Convert to fraction form
    8,912.60/13,361.37 = 5,618.43/x
  3. Step 3: Cross multiply
    8,912.60x = 13,361.37 × 5,618.43
  4. Step 4: Simplify right side
    8,912.60x = 75,069,855.24
  5. Step 5: Solve for x
    x = 75,069,855.24/8,912.60
  6. Step 6: Final answer
    x = 8,422.90

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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.