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Finding the Fourth Proportional to 2,095.64, 3,143.61 and 709.12

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Solution

The fourth proportional to 2,095.64, 3,143.61 and 709.12 is: 1,063.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,095.64 : 3,143.61 = 709.12 : x
  2. Step 2: Convert to fraction form
    2,095.64/3,143.61 = 709.12/x
  3. Step 3: Cross multiply
    2,095.64x = 3,143.61 × 709.12
  4. Step 4: Simplify right side
    2,095.64x = 2,229,200.65
  5. Step 5: Solve for x
    x = 2,229,200.65/2,095.64
  6. Step 6: Final answer
    x = 1,063.73

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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.