Home / 3,949.21-5,447.47-2,354.83

Finding the Fourth Proportional to 3,949.21, 5,447.47 and 2,354.83

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Solution

The fourth proportional to 3,949.21, 5,447.47 and 2,354.83 is: 3,248.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.21 : 5,447.47 = 2,354.83 : x
  2. Step 2: Convert to fraction form
    3,949.21/5,447.47 = 2,354.83/x
  3. Step 3: Cross multiply
    3,949.21x = 5,447.47 × 2,354.83
  4. Step 4: Simplify right side
    3,949.21x = 12,827,864.49
  5. Step 5: Solve for x
    x = 12,827,864.49/3,949.21
  6. Step 6: Final answer
    x = 3,248.21

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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.