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Finding the Fourth Proportional to 2,285.84, 3,428.31 and 969.16

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Solution

The fourth proportional to 2,285.84, 3,428.31 and 969.16 is: 1,453.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.84 : 3,428.31 = 969.16 : x
  2. Step 2: Convert to fraction form
    2,285.84/3,428.31 = 969.16/x
  3. Step 3: Cross multiply
    2,285.84x = 3,428.31 × 969.16
  4. Step 4: Simplify right side
    2,285.84x = 3,322,580.92
  5. Step 5: Solve for x
    x = 3,322,580.92/2,285.84
  6. Step 6: Final answer
    x = 1,453.55

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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.