Home / 3,882.80-5,823.84-1,285.76

Finding the Fourth Proportional to 3,882.80, 5,823.84 and 1,285.76

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Solution

The fourth proportional to 3,882.80, 5,823.84 and 1,285.76 is: 1,928.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,882.80 : 5,823.84 = 1,285.76 : x
  2. Step 2: Convert to fraction form
    3,882.80/5,823.84 = 1,285.76/x
  3. Step 3: Cross multiply
    3,882.80x = 5,823.84 × 1,285.76
  4. Step 4: Simplify right side
    3,882.80x = 7,488,060.52
  5. Step 5: Solve for x
    x = 7,488,060.52/3,882.80
  6. Step 6: Final answer
    x = 1,928.52

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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.