Home / 3,977.39-5,487.68-2,486.82

Finding the Fourth Proportional to 3,977.39, 5,487.68 and 2,486.82

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Solution

The fourth proportional to 3,977.39, 5,487.68 and 2,486.82 is: 3,431.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.39 : 5,487.68 = 2,486.82 : x
  2. Step 2: Convert to fraction form
    3,977.39/5,487.68 = 2,486.82/x
  3. Step 3: Cross multiply
    3,977.39x = 5,487.68 × 2,486.82
  4. Step 4: Simplify right side
    3,977.39x = 13,646,872.38
  5. Step 5: Solve for x
    x = 13,646,872.38/3,977.39
  6. Step 6: Final answer
    x = 3,431.11

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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.