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Finding the Fourth Proportional to 1,983.31, 2,975.01 and 751.30

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Solution

The fourth proportional to 1,983.31, 2,975.01 and 751.30 is: 1,126.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.31 : 2,975.01 = 751.30 : x
  2. Step 2: Convert to fraction form
    1,983.31/2,975.01 = 751.30/x
  3. Step 3: Cross multiply
    1,983.31x = 2,975.01 × 751.30
  4. Step 4: Simplify right side
    1,983.31x = 2,235,131.49
  5. Step 5: Solve for x
    x = 2,235,131.49/1,983.31
  6. Step 6: Final answer
    x = 1,126.97

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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.