Home / 3,882.87-5,355.18-2,820.69

Finding the Fourth Proportional to 3,882.87, 5,355.18 and 2,820.69

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Solution

The fourth proportional to 3,882.87, 5,355.18 and 2,820.69 is: 3,890.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,882.87 : 5,355.18 = 2,820.69 : x
  2. Step 2: Convert to fraction form
    3,882.87/5,355.18 = 2,820.69/x
  3. Step 3: Cross multiply
    3,882.87x = 5,355.18 × 2,820.69
  4. Step 4: Simplify right side
    3,882.87x = 15,105,302.67
  5. Step 5: Solve for x
    x = 15,105,302.67/3,882.87
  6. Step 6: Final answer
    x = 3,890.24

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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.