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Finding the Fourth Proportional to 3,805.43, 5,251.43 and 2,126.86

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Solution

The fourth proportional to 3,805.43, 5,251.43 and 2,126.86 is: 2,935.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,805.43 : 5,251.43 = 2,126.86 : x
  2. Step 2: Convert to fraction form
    3,805.43/5,251.43 = 2,126.86/x
  3. Step 3: Cross multiply
    3,805.43x = 5,251.43 × 2,126.86
  4. Step 4: Simplify right side
    3,805.43x = 11,169,056.41
  5. Step 5: Solve for x
    x = 11,169,056.41/3,805.43
  6. Step 6: Final answer
    x = 2,935.03

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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.