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Finding the Fourth Proportional to 1,939.91, 2,677.22 and 1,100.76

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Solution

The fourth proportional to 1,939.91, 2,677.22 and 1,100.76 is: 1,519.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.91 : 2,677.22 = 1,100.76 : x
  2. Step 2: Convert to fraction form
    1,939.91/2,677.22 = 1,100.76/x
  3. Step 3: Cross multiply
    1,939.91x = 2,677.22 × 1,100.76
  4. Step 4: Simplify right side
    1,939.91x = 2,946,979.44
  5. Step 5: Solve for x
    x = 2,946,979.44/1,939.91
  6. Step 6: Final answer
    x = 1,519.13

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1.5x scale

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.