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Finding the Fourth Proportional to 3,937.33, 5,394.96 and 3,879.01

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Solution

The fourth proportional to 3,937.33, 5,394.96 and 3,879.01 is: 5,315.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.33 : 5,394.96 = 3,879.01 : x
  2. Step 2: Convert to fraction form
    3,937.33/5,394.96 = 3,879.01/x
  3. Step 3: Cross multiply
    3,937.33x = 5,394.96 × 3,879.01
  4. Step 4: Simplify right side
    3,937.33x = 20,927,103.79
  5. Step 5: Solve for x
    x = 20,927,103.79/3,937.33
  6. Step 6: Final answer
    x = 5,315.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.