Home / 9,419.41-12,998.94-5,170.87

Finding the Fourth Proportional to 9,419.41, 12,998.94 and 5,170.87

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Solution

The fourth proportional to 9,419.41, 12,998.94 and 5,170.87 is: 7,135.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,419.41 : 12,998.94 = 5,170.87 : x
  2. Step 2: Convert to fraction form
    9,419.41/12,998.94 = 5,170.87/x
  3. Step 3: Cross multiply
    9,419.41x = 12,998.94 × 5,170.87
  4. Step 4: Simplify right side
    9,419.41x = 67,215,750.96
  5. Step 5: Solve for x
    x = 67,215,750.96/9,419.41
  6. Step 6: Final answer
    x = 7,135.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.