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Finding the Fourth Proportional to 3,387.87, 4,664.87 and 2,965.86

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Solution

The fourth proportional to 3,387.87, 4,664.87 and 2,965.86 is: 4,083.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.87 : 4,664.87 = 2,965.86 : x
  2. Step 2: Convert to fraction form
    3,387.87/4,664.87 = 2,965.86/x
  3. Step 3: Cross multiply
    3,387.87x = 4,664.87 × 2,965.86
  4. Step 4: Simplify right side
    3,387.87x = 13,835,351.34
  5. Step 5: Solve for x
    x = 13,835,351.34/3,387.87
  6. Step 6: Final answer
    x = 4,083.79

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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.