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Finding the Fourth Proportional to 1,758.75, 2,638.47 and 881.82

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Solution

The fourth proportional to 1,758.75, 2,638.47 and 881.82 is: 1,322.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,758.75 : 2,638.47 = 881.82 : x
  2. Step 2: Convert to fraction form
    1,758.75/2,638.47 = 881.82/x
  3. Step 3: Cross multiply
    1,758.75x = 2,638.47 × 881.82
  4. Step 4: Simplify right side
    1,758.75x = 2,326,658.92
  5. Step 5: Solve for x
    x = 2,326,658.92/1,758.75
  6. Step 6: Final answer
    x = 1,322.91

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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.