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Finding the Fourth Proportional to 1,979.01, 2,955.87 and 1,791.10

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Solution

The fourth proportional to 1,979.01, 2,955.87 and 1,791.10 is: 2,675.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.01 : 2,955.87 = 1,791.10 : x
  2. Step 2: Convert to fraction form
    1,979.01/2,955.87 = 1,791.10/x
  3. Step 3: Cross multiply
    1,979.01x = 2,955.87 × 1,791.10
  4. Step 4: Simplify right side
    1,979.01x = 5,294,253.42
  5. Step 5: Solve for x
    x = 5,294,253.42/1,979.01
  6. Step 6: Final answer
    x = 2,675.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.