Home / 9,419.28-12,998.82-5,227.80

Finding the Fourth Proportional to 9,419.28, 12,998.82 and 5,227.80

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Solution

The fourth proportional to 9,419.28, 12,998.82 and 5,227.80 is: 7,214.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,419.28 : 12,998.82 = 5,227.80 : x
  2. Step 2: Convert to fraction form
    9,419.28/12,998.82 = 5,227.80/x
  3. Step 3: Cross multiply
    9,419.28x = 12,998.82 × 5,227.80
  4. Step 4: Simplify right side
    9,419.28x = 67,955,231.20
  5. Step 5: Solve for x
    x = 67,955,231.20/9,419.28
  6. Step 6: Final answer
    x = 7,214.48

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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.