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Finding the Fourth Proportional to 1,945.92, 2,917.25 and 849.45

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Solution

The fourth proportional to 1,945.92, 2,917.25 and 849.45 is: 1,273.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.92 : 2,917.25 = 849.45 : x
  2. Step 2: Convert to fraction form
    1,945.92/2,917.25 = 849.45/x
  3. Step 3: Cross multiply
    1,945.92x = 2,917.25 × 849.45
  4. Step 4: Simplify right side
    1,945.92x = 2,478,056.95
  5. Step 5: Solve for x
    x = 2,478,056.95/1,945.92
  6. Step 6: Final answer
    x = 1,273.46

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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.