Home / 2,882.68-4,320.78-1,240.12

Finding the Fourth Proportional to 2,882.68, 4,320.78 and 1,240.12

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Solution

The fourth proportional to 2,882.68, 4,320.78 and 1,240.12 is: 1,858.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,882.68 : 4,320.78 = 1,240.12 : x
  2. Step 2: Convert to fraction form
    2,882.68/4,320.78 = 1,240.12/x
  3. Step 3: Cross multiply
    2,882.68x = 4,320.78 × 1,240.12
  4. Step 4: Simplify right side
    2,882.68x = 5,358,285.69
  5. Step 5: Solve for x
    x = 5,358,285.69/2,882.68
  6. Step 6: Final answer
    x = 1,858.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.