Home / 2,310.29-3,187.91-1,315.43

Finding the Fourth Proportional to 2,310.29, 3,187.91 and 1,315.43

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Solution

The fourth proportional to 2,310.29, 3,187.91 and 1,315.43 is: 1,815.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.29 : 3,187.91 = 1,315.43 : x
  2. Step 2: Convert to fraction form
    2,310.29/3,187.91 = 1,315.43/x
  3. Step 3: Cross multiply
    2,310.29x = 3,187.91 × 1,315.43
  4. Step 4: Simplify right side
    2,310.29x = 4,193,465.87
  5. Step 5: Solve for x
    x = 4,193,465.87/2,310.29
  6. Step 6: Final answer
    x = 1,815.13

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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.