Home / 9,419.12-12,998.14-5,170.20

Finding the Fourth Proportional to 9,419.12, 12,998.14 and 5,170.20

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Solution

The fourth proportional to 9,419.12, 12,998.14 and 5,170.20 is: 7,134.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,419.12 : 12,998.14 = 5,170.20 : x
  2. Step 2: Convert to fraction form
    9,419.12/12,998.14 = 5,170.20/x
  3. Step 3: Cross multiply
    9,419.12x = 12,998.14 × 5,170.20
  4. Step 4: Simplify right side
    9,419.12x = 67,202,983.43
  5. Step 5: Solve for x
    x = 67,202,983.43/9,419.12
  6. Step 6: Final answer
    x = 7,134.74

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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.