Home / 5,781.11-7,977.85-3,228.91

Finding the Fourth Proportional to 5,781.11, 7,977.85 and 3,228.91

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Solution

The fourth proportional to 5,781.11, 7,977.85 and 3,228.91 is: 4,455.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,781.11 : 7,977.85 = 3,228.91 : x
  2. Step 2: Convert to fraction form
    5,781.11/7,977.85 = 3,228.91/x
  3. Step 3: Cross multiply
    5,781.11x = 7,977.85 × 3,228.91
  4. Step 4: Simplify right side
    5,781.11x = 25,759,759.64
  5. Step 5: Solve for x
    x = 25,759,759.64/5,781.11
  6. Step 6: Final answer
    x = 4,455.85

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1.5x scale

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.