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Finding the Fourth Proportional to 2,859.39, 4,286.34 and 910.32

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Solution

The fourth proportional to 2,859.39, 4,286.34 and 910.32 is: 1,364.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.39 : 4,286.34 = 910.32 : x
  2. Step 2: Convert to fraction form
    2,859.39/4,286.34 = 910.32/x
  3. Step 3: Cross multiply
    2,859.39x = 4,286.34 × 910.32
  4. Step 4: Simplify right side
    2,859.39x = 3,901,941.03
  5. Step 5: Solve for x
    x = 3,901,941.03/2,859.39
  6. Step 6: Final answer
    x = 1,364.61

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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.