Home / 5,120.58-7,065.78-2,882.10

Finding the Fourth Proportional to 5,120.58, 7,065.78 and 2,882.10

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Solution

The fourth proportional to 5,120.58, 7,065.78 and 2,882.10 is: 3,976.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.58 : 7,065.78 = 2,882.10 : x
  2. Step 2: Convert to fraction form
    5,120.58/7,065.78 = 2,882.10/x
  3. Step 3: Cross multiply
    5,120.58x = 7,065.78 × 2,882.10
  4. Step 4: Simplify right side
    5,120.58x = 20,364,284.54
  5. Step 5: Solve for x
    x = 20,364,284.54/5,120.58
  6. Step 6: Final answer
    x = 3,976.95

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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.