Home / 3,758.50-5,639.81-1,909.77

Finding the Fourth Proportional to 3,758.50, 5,639.81 and 1,909.77

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Solution

The fourth proportional to 3,758.50, 5,639.81 and 1,909.77 is: 2,865.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,758.50 : 5,639.81 = 1,909.77 : x
  2. Step 2: Convert to fraction form
    3,758.50/5,639.81 = 1,909.77/x
  3. Step 3: Cross multiply
    3,758.50x = 5,639.81 × 1,909.77
  4. Step 4: Simplify right side
    3,758.50x = 10,770,726.98
  5. Step 5: Solve for x
    x = 10,770,726.98/3,758.50
  6. Step 6: Final answer
    x = 2,865.70

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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.