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Finding the Fourth Proportional to 1,944.70, 2,917.03 and 1,122.45

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Solution

The fourth proportional to 1,944.70, 2,917.03 and 1,122.45 is: 1,683.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,944.70 : 2,917.03 = 1,122.45 : x
  2. Step 2: Convert to fraction form
    1,944.70/2,917.03 = 1,122.45/x
  3. Step 3: Cross multiply
    1,944.70x = 2,917.03 × 1,122.45
  4. Step 4: Simplify right side
    1,944.70x = 3,274,220.32
  5. Step 5: Solve for x
    x = 3,274,220.32/1,944.70
  6. Step 6: Final answer
    x = 1,683.66

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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.