Home / 2,382.65-3,286.95-1,387.33

Finding the Fourth Proportional to 2,382.65, 3,286.95 and 1,387.33

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Solution

The fourth proportional to 2,382.65, 3,286.95 and 1,387.33 is: 1,913.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,382.65 : 3,286.95 = 1,387.33 : x
  2. Step 2: Convert to fraction form
    2,382.65/3,286.95 = 1,387.33/x
  3. Step 3: Cross multiply
    2,382.65x = 3,286.95 × 1,387.33
  4. Step 4: Simplify right side
    2,382.65x = 4,560,070.92
  5. Step 5: Solve for x
    x = 4,560,070.92/2,382.65
  6. Step 6: Final answer
    x = 1,913.87

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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.