Home / 3,639.62-5,456.85-1,788.77

Finding the Fourth Proportional to 3,639.62, 5,456.85 and 1,788.77

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Solution

The fourth proportional to 3,639.62, 5,456.85 and 1,788.77 is: 2,681.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.62 : 5,456.85 = 1,788.77 : x
  2. Step 2: Convert to fraction form
    3,639.62/5,456.85 = 1,788.77/x
  3. Step 3: Cross multiply
    3,639.62x = 5,456.85 × 1,788.77
  4. Step 4: Simplify right side
    3,639.62x = 9,761,049.57
  5. Step 5: Solve for x
    x = 9,761,049.57/3,639.62
  6. Step 6: Final answer
    x = 2,681.89

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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.