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Finding the Fourth Proportional to 2,185.98, 3,278.97 and 887.46

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Solution

The fourth proportional to 2,185.98, 3,278.97 and 887.46 is: 1,331.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.98 : 3,278.97 = 887.46 : x
  2. Step 2: Convert to fraction form
    2,185.98/3,278.97 = 887.46/x
  3. Step 3: Cross multiply
    2,185.98x = 3,278.97 × 887.46
  4. Step 4: Simplify right side
    2,185.98x = 2,909,954.72
  5. Step 5: Solve for x
    x = 2,909,954.72/2,185.98
  6. Step 6: Final answer
    x = 1,331.19

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Double scale
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Similar ratio
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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.