Home / 2,310.30-3,187.89-1,315.65

Finding the Fourth Proportional to 2,310.30, 3,187.89 and 1,315.65

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Solution

The fourth proportional to 2,310.30, 3,187.89 and 1,315.65 is: 1,815.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.30 : 3,187.89 = 1,315.65 : x
  2. Step 2: Convert to fraction form
    2,310.30/3,187.89 = 1,315.65/x
  3. Step 3: Cross multiply
    2,310.30x = 3,187.89 × 1,315.65
  4. Step 4: Simplify right side
    2,310.30x = 4,194,147.48
  5. Step 5: Solve for x
    x = 4,194,147.48/2,310.30
  6. Step 6: Final answer
    x = 1,815.41

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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.