Home / 2,310.39-3,188.52-1,315.71

Finding the Fourth Proportional to 2,310.39, 3,188.52 and 1,315.71

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Solution

The fourth proportional to 2,310.39, 3,188.52 and 1,315.71 is: 1,815.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.39 : 3,188.52 = 1,315.71 : x
  2. Step 2: Convert to fraction form
    2,310.39/3,188.52 = 1,315.71/x
  3. Step 3: Cross multiply
    2,310.39x = 3,188.52 × 1,315.71
  4. Step 4: Simplify right side
    2,310.39x = 4,195,167.65
  5. Step 5: Solve for x
    x = 4,195,167.65/2,310.39
  6. Step 6: Final answer
    x = 1,815.78

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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.