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Finding the Fourth Proportional to 9,061, 13,591.56 and 2,905

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Solution

The fourth proportional to 9,061, 13,591.56 and 2,905 is: 4,357.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,061 : 13,591.56 = 2,905 : x
  2. Step 2: Convert to fraction form
    9,061/13,591.56 = 2,905/x
  3. Step 3: Cross multiply
    9,061x = 13,591.56 × 2,905
  4. Step 4: Simplify right side
    9,061x = 39,483,481.80
  5. Step 5: Solve for x
    x = 39,483,481.80/9,061
  6. Step 6: Final answer
    x = 4,357.52

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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.