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Finding the Fourth Proportional to 2,165.52, 3,248.28 and 867.88

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Solution

The fourth proportional to 2,165.52, 3,248.28 and 867.88 is: 1,301.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.52 : 3,248.28 = 867.88 : x
  2. Step 2: Convert to fraction form
    2,165.52/3,248.28 = 867.88/x
  3. Step 3: Cross multiply
    2,165.52x = 3,248.28 × 867.88
  4. Step 4: Simplify right side
    2,165.52x = 2,819,117.25
  5. Step 5: Solve for x
    x = 2,819,117.25/2,165.52
  6. Step 6: Final answer
    x = 1,301.82

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1.5x scale

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.