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Finding the Fourth Proportional to 1,761.96, 2,431.49 and 976.02

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Solution

The fourth proportional to 1,761.96, 2,431.49 and 976.02 is: 1,346.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.96 : 2,431.49 = 976.02 : x
  2. Step 2: Convert to fraction form
    1,761.96/2,431.49 = 976.02/x
  3. Step 3: Cross multiply
    1,761.96x = 2,431.49 × 976.02
  4. Step 4: Simplify right side
    1,761.96x = 2,373,177.99
  5. Step 5: Solve for x
    x = 2,373,177.99/1,761.96
  6. Step 6: Final answer
    x = 1,346.90

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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.