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Finding the Fourth Proportional to 2,656.32, 3,983.19 and 806.95

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Solution

The fourth proportional to 2,656.32, 3,983.19 and 806.95 is: 1,210.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,656.32 : 3,983.19 = 806.95 : x
  2. Step 2: Convert to fraction form
    2,656.32/3,983.19 = 806.95/x
  3. Step 3: Cross multiply
    2,656.32x = 3,983.19 × 806.95
  4. Step 4: Simplify right side
    2,656.32x = 3,214,235.17
  5. Step 5: Solve for x
    x = 3,214,235.17/2,656.32
  6. Step 6: Final answer
    x = 1,210.03

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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.