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Finding the Fourth Proportional to 2,711.70, 3,742.55 and 1,969.02

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Solution

The fourth proportional to 2,711.70, 3,742.55 and 1,969.02 is: 2,717.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,711.70 : 3,742.55 = 1,969.02 : x
  2. Step 2: Convert to fraction form
    2,711.70/3,742.55 = 1,969.02/x
  3. Step 3: Cross multiply
    2,711.70x = 3,742.55 × 1,969.02
  4. Step 4: Simplify right side
    2,711.70x = 7,369,145.96
  5. Step 5: Solve for x
    x = 7,369,145.96/2,711.70
  6. Step 6: Final answer
    x = 2,717.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.