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Finding the Fourth Proportional to 2,988.66, 4,125.96 and 1,995.42

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Solution

The fourth proportional to 2,988.66, 4,125.96 and 1,995.42 is: 2,754.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.66 : 4,125.96 = 1,995.42 : x
  2. Step 2: Convert to fraction form
    2,988.66/4,125.96 = 1,995.42/x
  3. Step 3: Cross multiply
    2,988.66x = 4,125.96 × 1,995.42
  4. Step 4: Simplify right side
    2,988.66x = 8,233,023.10
  5. Step 5: Solve for x
    x = 8,233,023.10/2,988.66
  6. Step 6: Final answer
    x = 2,754.75

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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.