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Finding the Fourth Proportional to 6,990.65, 10,489.40 and 2,833.65

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Solution

The fourth proportional to 6,990.65, 10,489.40 and 2,833.65 is: 4,251.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.65 : 10,489.40 = 2,833.65 : x
  2. Step 2: Convert to fraction form
    6,990.65/10,489.40 = 2,833.65/x
  3. Step 3: Cross multiply
    6,990.65x = 10,489.40 × 2,833.65
  4. Step 4: Simplify right side
    6,990.65x = 29,723,240.52
  5. Step 5: Solve for x
    x = 29,723,240.52/6,990.65
  6. Step 6: Final answer
    x = 4,251.85

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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.