Home / 1,629.45-2,248.62-911.52

Finding the Fourth Proportional to 1,629.45, 2,248.62 and 911.52

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Solution

The fourth proportional to 1,629.45, 2,248.62 and 911.52 is: 1,257.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.45 : 2,248.62 = 911.52 : x
  2. Step 2: Convert to fraction form
    1,629.45/2,248.62 = 911.52/x
  3. Step 3: Cross multiply
    1,629.45x = 2,248.62 × 911.52
  4. Step 4: Simplify right side
    1,629.45x = 2,049,662.10
  5. Step 5: Solve for x
    x = 2,049,662.10/1,629.45
  6. Step 6: Final answer
    x = 1,257.89

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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.