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Finding the Fourth Proportional to 3,988.44, 5,978.08 and 2,036.52

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Solution

The fourth proportional to 3,988.44, 5,978.08 and 2,036.52 is: 3,052.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.44 : 5,978.08 = 2,036.52 : x
  2. Step 2: Convert to fraction form
    3,988.44/5,978.08 = 2,036.52/x
  3. Step 3: Cross multiply
    3,988.44x = 5,978.08 × 2,036.52
  4. Step 4: Simplify right side
    3,988.44x = 12,174,479.48
  5. Step 5: Solve for x
    x = 12,174,479.48/3,988.44
  6. Step 6: Final answer
    x = 3,052.44

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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.