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Finding the Fourth Proportional to 3,894.80, 5,369.24 and 2,401.71

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Solution

The fourth proportional to 3,894.80, 5,369.24 and 2,401.71 is: 3,310.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.80 : 5,369.24 = 2,401.71 : x
  2. Step 2: Convert to fraction form
    3,894.80/5,369.24 = 2,401.71/x
  3. Step 3: Cross multiply
    3,894.80x = 5,369.24 × 2,401.71
  4. Step 4: Simplify right side
    3,894.80x = 12,895,345.39
  5. Step 5: Solve for x
    x = 12,895,345.39/3,894.80
  6. Step 6: Final answer
    x = 3,310.92

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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.