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Finding the Fourth Proportional to 2,071.66, 3,107.48 and 755.42

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Solution

The fourth proportional to 2,071.66, 3,107.48 and 755.42 is: 1,133.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,071.66 : 3,107.48 = 755.42 : x
  2. Step 2: Convert to fraction form
    2,071.66/3,107.48 = 755.42/x
  3. Step 3: Cross multiply
    2,071.66x = 3,107.48 × 755.42
  4. Step 4: Simplify right side
    2,071.66x = 2,347,452.54
  5. Step 5: Solve for x
    x = 2,347,452.54/2,071.66
  6. Step 6: Final answer
    x = 1,133.13

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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.