Home / 2,187.26-3,281.71-1,310.38

Finding the Fourth Proportional to 2,187.26, 3,281.71 and 1,310.38

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Solution

The fourth proportional to 2,187.26, 3,281.71 and 1,310.38 is: 1,966.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.26 : 3,281.71 = 1,310.38 : x
  2. Step 2: Convert to fraction form
    2,187.26/3,281.71 = 1,310.38/x
  3. Step 3: Cross multiply
    2,187.26x = 3,281.71 × 1,310.38
  4. Step 4: Simplify right side
    2,187.26x = 4,300,270.74
  5. Step 5: Solve for x
    x = 4,300,270.74/2,187.26
  6. Step 6: Final answer
    x = 1,966.05

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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.