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Finding the Fourth Proportional to 3,864.39, 5,796.99 and 1,399.47

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Solution

The fourth proportional to 3,864.39, 5,796.99 and 1,399.47 is: 2,099.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,864.39 : 5,796.99 = 1,399.47 : x
  2. Step 2: Convert to fraction form
    3,864.39/5,796.99 = 1,399.47/x
  3. Step 3: Cross multiply
    3,864.39x = 5,796.99 × 1,399.47
  4. Step 4: Simplify right side
    3,864.39x = 8,112,713.60
  5. Step 5: Solve for x
    x = 8,112,713.60/3,864.39
  6. Step 6: Final answer
    x = 2,099.35

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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.