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Finding the Fourth Proportional to 3,999.71, 5,999.75 and 1,226.18

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Solution

The fourth proportional to 3,999.71, 5,999.75 and 1,226.18 is: 1,839.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.71 : 5,999.75 = 1,226.18 : x
  2. Step 2: Convert to fraction form
    3,999.71/5,999.75 = 1,226.18/x
  3. Step 3: Cross multiply
    3,999.71x = 5,999.75 × 1,226.18
  4. Step 4: Simplify right side
    3,999.71x = 7,356,773.46
  5. Step 5: Solve for x
    x = 7,356,773.46/3,999.71
  6. Step 6: Final answer
    x = 1,839.33

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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.