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Finding the Fourth Proportional to 1,266.32, 1,896.78 and 937.10

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Solution

The fourth proportional to 1,266.32, 1,896.78 and 937.10 is: 1,403.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.32 : 1,896.78 = 937.10 : x
  2. Step 2: Convert to fraction form
    1,266.32/1,896.78 = 937.10/x
  3. Step 3: Cross multiply
    1,266.32x = 1,896.78 × 937.10
  4. Step 4: Simplify right side
    1,266.32x = 1,777,472.54
  5. Step 5: Solve for x
    x = 1,777,472.54/1,266.32
  6. Step 6: Final answer
    x = 1,403.65

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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.