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Finding the Fourth Proportional to 2,600.25, 3,899.16 and 867.66

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Solution

The fourth proportional to 2,600.25, 3,899.16 and 867.66 is: 1,301.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,600.25 : 3,899.16 = 867.66 : x
  2. Step 2: Convert to fraction form
    2,600.25/3,899.16 = 867.66/x
  3. Step 3: Cross multiply
    2,600.25x = 3,899.16 × 867.66
  4. Step 4: Simplify right side
    2,600.25x = 3,383,145.17
  5. Step 5: Solve for x
    x = 3,383,145.17/2,600.25
  6. Step 6: Final answer
    x = 1,301.08

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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.