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Finding the Fourth Proportional to 2,000.28, 3,000.72 and 701.52

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Solution

The fourth proportional to 2,000.28, 3,000.72 and 701.52 is: 1,052.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,000.28 : 3,000.72 = 701.52 : x
  2. Step 2: Convert to fraction form
    2,000.28/3,000.72 = 701.52/x
  3. Step 3: Cross multiply
    2,000.28x = 3,000.72 × 701.52
  4. Step 4: Simplify right side
    2,000.28x = 2,105,065.09
  5. Step 5: Solve for x
    x = 2,105,065.09/2,000.28
  6. Step 6: Final answer
    x = 1,052.39

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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.