Home / 2,617.68-3,921.84-1,382.32

Finding the Fourth Proportional to 2,617.68, 3,921.84 and 1,382.32

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Solution

The fourth proportional to 2,617.68, 3,921.84 and 1,382.32 is: 2,071.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.68 : 3,921.84 = 1,382.32 : x
  2. Step 2: Convert to fraction form
    2,617.68/3,921.84 = 1,382.32/x
  3. Step 3: Cross multiply
    2,617.68x = 3,921.84 × 1,382.32
  4. Step 4: Simplify right side
    2,617.68x = 5,421,257.69
  5. Step 5: Solve for x
    x = 5,421,257.69/2,617.68
  6. Step 6: Final answer
    x = 2,071.02

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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.