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Finding the Fourth Proportional to 6,388.65, 9,583.56 and 2,690.19

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Solution

The fourth proportional to 6,388.65, 9,583.56 and 2,690.19 is: 4,035.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,388.65 : 9,583.56 = 2,690.19 : x
  2. Step 2: Convert to fraction form
    6,388.65/9,583.56 = 2,690.19/x
  3. Step 3: Cross multiply
    6,388.65x = 9,583.56 × 2,690.19
  4. Step 4: Simplify right side
    6,388.65x = 25,781,597.28
  5. Step 5: Solve for x
    x = 25,781,597.28/6,388.65
  6. Step 6: Final answer
    x = 4,035.53

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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.