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Finding the Fourth Proportional to 2,645.25, 3,965.09 and 888.59

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Solution

The fourth proportional to 2,645.25, 3,965.09 and 888.59 is: 1,331.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,645.25 : 3,965.09 = 888.59 : x
  2. Step 2: Convert to fraction form
    2,645.25/3,965.09 = 888.59/x
  3. Step 3: Cross multiply
    2,645.25x = 3,965.09 × 888.59
  4. Step 4: Simplify right side
    2,645.25x = 3,523,339.32
  5. Step 5: Solve for x
    x = 3,523,339.32/2,645.25
  6. Step 6: Final answer
    x = 1,331.95

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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.