Home / 7,989.41-11,974.55-5,645.90

Finding the Fourth Proportional to 7,989.41, 11,974.55 and 5,645.90

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Solution

The fourth proportional to 7,989.41, 11,974.55 and 5,645.90 is: 8,462.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.41 : 11,974.55 = 5,645.90 : x
  2. Step 2: Convert to fraction form
    7,989.41/11,974.55 = 5,645.90/x
  3. Step 3: Cross multiply
    7,989.41x = 11,974.55 × 5,645.90
  4. Step 4: Simplify right side
    7,989.41x = 67,607,121.49
  5. Step 5: Solve for x
    x = 67,607,121.49/7,989.41
  6. Step 6: Final answer
    x = 8,462.09

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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.