Home / 2,310.38-3,188.42-1,315.84

Finding the Fourth Proportional to 2,310.38, 3,188.42 and 1,315.84

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Solution

The fourth proportional to 2,310.38, 3,188.42 and 1,315.84 is: 1,815.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.38 : 3,188.42 = 1,315.84 : x
  2. Step 2: Convert to fraction form
    2,310.38/3,188.42 = 1,315.84/x
  3. Step 3: Cross multiply
    2,310.38x = 3,188.42 × 1,315.84
  4. Step 4: Simplify right side
    2,310.38x = 4,195,450.57
  5. Step 5: Solve for x
    x = 4,195,450.57/2,310.38
  6. Step 6: Final answer
    x = 1,815.91

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1.5x scale

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.