Home / 2,187.13-3,281.52-1,310.26

Finding the Fourth Proportional to 2,187.13, 3,281.52 and 1,310.26

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Solution

The fourth proportional to 2,187.13, 3,281.52 and 1,310.26 is: 1,965.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.13 : 3,281.52 = 1,310.26 : x
  2. Step 2: Convert to fraction form
    2,187.13/3,281.52 = 1,310.26/x
  3. Step 3: Cross multiply
    2,187.13x = 3,281.52 × 1,310.26
  4. Step 4: Simplify right side
    2,187.13x = 4,299,644.40
  5. Step 5: Solve for x
    x = 4,299,644.40/2,187.13
  6. Step 6: Final answer
    x = 1,965.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.