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Finding the Fourth Proportional to 6,458.66, 9,689.88 and 3,340.43

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Solution

The fourth proportional to 6,458.66, 9,689.88 and 3,340.43 is: 5,011.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,458.66 : 9,689.88 = 3,340.43 : x
  2. Step 2: Convert to fraction form
    6,458.66/9,689.88 = 3,340.43/x
  3. Step 3: Cross multiply
    6,458.66x = 9,689.88 × 3,340.43
  4. Step 4: Simplify right side
    6,458.66x = 32,368,365.85
  5. Step 5: Solve for x
    x = 32,368,365.85/6,458.66
  6. Step 6: Final answer
    x = 5,011.62

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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.