Home / 7,087.28-9,780.32-3,943.44

Finding the Fourth Proportional to 7,087.28, 9,780.32 and 3,943.44

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Solution

The fourth proportional to 7,087.28, 9,780.32 and 3,943.44 is: 5,441.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,087.28 : 9,780.32 = 3,943.44 : x
  2. Step 2: Convert to fraction form
    7,087.28/9,780.32 = 3,943.44/x
  3. Step 3: Cross multiply
    7,087.28x = 9,780.32 × 3,943.44
  4. Step 4: Simplify right side
    7,087.28x = 38,568,105.10
  5. Step 5: Solve for x
    x = 38,568,105.10/7,087.28
  6. Step 6: Final answer
    x = 5,441.88

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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.