Home / 2,187.52-3,281.30-1,215.52

Finding the Fourth Proportional to 2,187.52, 3,281.30 and 1,215.52

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Solution

The fourth proportional to 2,187.52, 3,281.30 and 1,215.52 is: 1,823.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.52 : 3,281.30 = 1,215.52 : x
  2. Step 2: Convert to fraction form
    2,187.52/3,281.30 = 1,215.52/x
  3. Step 3: Cross multiply
    2,187.52x = 3,281.30 × 1,215.52
  4. Step 4: Simplify right side
    2,187.52x = 3,988,485.78
  5. Step 5: Solve for x
    x = 3,988,485.78/2,187.52
  6. Step 6: Final answer
    x = 1,823.29

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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.