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Finding the Fourth Proportional to 3,169.25, 4,373.78 and 1,772

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Solution

The fourth proportional to 3,169.25, 4,373.78 and 1,772 is: 2,445.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,169.25 : 4,373.78 = 1,772 : x
  2. Step 2: Convert to fraction form
    3,169.25/4,373.78 = 1,772/x
  3. Step 3: Cross multiply
    3,169.25x = 4,373.78 × 1,772
  4. Step 4: Simplify right side
    3,169.25x = 7,750,338.16
  5. Step 5: Solve for x
    x = 7,750,338.16/3,169.25
  6. Step 6: Final answer
    x = 2,445.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.