Home / 2,310.05-3,187.94-1,315.31

Finding the Fourth Proportional to 2,310.05, 3,187.94 and 1,315.31

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Solution

The fourth proportional to 2,310.05, 3,187.94 and 1,315.31 is: 1,815.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.05 : 3,187.94 = 1,315.31 : x
  2. Step 2: Convert to fraction form
    2,310.05/3,187.94 = 1,315.31/x
  3. Step 3: Cross multiply
    2,310.05x = 3,187.94 × 1,315.31
  4. Step 4: Simplify right side
    2,310.05x = 4,193,106.85
  5. Step 5: Solve for x
    x = 4,193,106.85/2,310.05
  6. Step 6: Final answer
    x = 1,815.16

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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.