Home / 3,815.39-5,721.86-1,182.78

Finding the Fourth Proportional to 3,815.39, 5,721.86 and 1,182.78

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Solution

The fourth proportional to 3,815.39, 5,721.86 and 1,182.78 is: 1,773.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.39 : 5,721.86 = 1,182.78 : x
  2. Step 2: Convert to fraction form
    3,815.39/5,721.86 = 1,182.78/x
  3. Step 3: Cross multiply
    3,815.39x = 5,721.86 × 1,182.78
  4. Step 4: Simplify right side
    3,815.39x = 6,767,695.66
  5. Step 5: Solve for x
    x = 6,767,695.66/3,815.39
  6. Step 6: Final answer
    x = 1,773.79

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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.