Home / 3,815.68-5,724.08-1,217.76

Finding the Fourth Proportional to 3,815.68, 5,724.08 and 1,217.76

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Solution

The fourth proportional to 3,815.68, 5,724.08 and 1,217.76 is: 1,826.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.68 : 5,724.08 = 1,217.76 : x
  2. Step 2: Convert to fraction form
    3,815.68/5,724.08 = 1,217.76/x
  3. Step 3: Cross multiply
    3,815.68x = 5,724.08 × 1,217.76
  4. Step 4: Simplify right side
    3,815.68x = 6,970,555.66
  5. Step 5: Solve for x
    x = 6,970,555.66/3,815.68
  6. Step 6: Final answer
    x = 1,826.82

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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.