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Finding the Fourth Proportional to 6,389.96, 9,585.96 and 2,231.12

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Solution

The fourth proportional to 6,389.96, 9,585.96 and 2,231.12 is: 3,347.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.96 : 9,585.96 = 2,231.12 : x
  2. Step 2: Convert to fraction form
    6,389.96/9,585.96 = 2,231.12/x
  3. Step 3: Cross multiply
    6,389.96x = 9,585.96 × 2,231.12
  4. Step 4: Simplify right side
    6,389.96x = 21,387,427.08
  5. Step 5: Solve for x
    x = 21,387,427.08/6,389.96
  6. Step 6: Final answer
    x = 3,347.04

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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.