Home / 3,977.57-5,489.55-2,405.66

Finding the Fourth Proportional to 3,977.57, 5,489.55 and 2,405.66

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Solution

The fourth proportional to 3,977.57, 5,489.55 and 2,405.66 is: 3,320.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.57 : 5,489.55 = 2,405.66 : x
  2. Step 2: Convert to fraction form
    3,977.57/5,489.55 = 2,405.66/x
  3. Step 3: Cross multiply
    3,977.57x = 5,489.55 × 2,405.66
  4. Step 4: Simplify right side
    3,977.57x = 13,205,990.85
  5. Step 5: Solve for x
    x = 13,205,990.85/3,977.57
  6. Step 6: Final answer
    x = 3,320.12

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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.