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Finding the Fourth Proportional to 3,894.96, 5,839.82 and 1,813.80

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Solution

The fourth proportional to 3,894.96, 5,839.82 and 1,813.80 is: 2,719.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.96 : 5,839.82 = 1,813.80 : x
  2. Step 2: Convert to fraction form
    3,894.96/5,839.82 = 1,813.80/x
  3. Step 3: Cross multiply
    3,894.96x = 5,839.82 × 1,813.80
  4. Step 4: Simplify right side
    3,894.96x = 10,592,265.52
  5. Step 5: Solve for x
    x = 10,592,265.52/3,894.96
  6. Step 6: Final answer
    x = 2,719.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.