Home / 8,989.18-13,489.77-3,145.79

Finding the Fourth Proportional to 8,989.18, 13,489.77 and 3,145.79

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Solution

The fourth proportional to 8,989.18, 13,489.77 and 3,145.79 is: 4,720.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.18 : 13,489.77 = 3,145.79 : x
  2. Step 2: Convert to fraction form
    8,989.18/13,489.77 = 3,145.79/x
  3. Step 3: Cross multiply
    8,989.18x = 13,489.77 × 3,145.79
  4. Step 4: Simplify right side
    8,989.18x = 42,435,926.67
  5. Step 5: Solve for x
    x = 42,435,926.67/8,989.18
  6. Step 6: Final answer
    x = 4,720.78

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.