Home / 3,677.20-5,515.81-903.85

Finding the Fourth Proportional to 3,677.20, 5,515.81 and 903.85

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Solution

The fourth proportional to 3,677.20, 5,515.81 and 903.85 is: 1,355.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,677.20 : 5,515.81 = 903.85 : x
  2. Step 2: Convert to fraction form
    3,677.20/5,515.81 = 903.85/x
  3. Step 3: Cross multiply
    3,677.20x = 5,515.81 × 903.85
  4. Step 4: Simplify right side
    3,677.20x = 4,985,464.87
  5. Step 5: Solve for x
    x = 4,985,464.87/3,677.20
  6. Step 6: Final answer
    x = 1,355.78

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1.5x scale

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.