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Finding the Fourth Proportional to 2,056.30, 3,082.87 and 959.88

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Solution

The fourth proportional to 2,056.30, 3,082.87 and 959.88 is: 1,439.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,056.30 : 3,082.87 = 959.88 : x
  2. Step 2: Convert to fraction form
    2,056.30/3,082.87 = 959.88/x
  3. Step 3: Cross multiply
    2,056.30x = 3,082.87 × 959.88
  4. Step 4: Simplify right side
    2,056.30x = 2,959,185.26
  5. Step 5: Solve for x
    x = 2,959,185.26/2,056.30
  6. Step 6: Final answer
    x = 1,439.08

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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.