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Finding the Fourth Proportional to 2,243.78, 3,365.69 and 782.95

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Solution

The fourth proportional to 2,243.78, 3,365.69 and 782.95 is: 1,174.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,243.78 : 3,365.69 = 782.95 : x
  2. Step 2: Convert to fraction form
    2,243.78/3,365.69 = 782.95/x
  3. Step 3: Cross multiply
    2,243.78x = 3,365.69 × 782.95
  4. Step 4: Simplify right side
    2,243.78x = 2,635,167.57
  5. Step 5: Solve for x
    x = 2,635,167.57/2,243.78
  6. Step 6: Final answer
    x = 1,174.43

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1.5x scale

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.