Home / 1,091.28-1,634.76-937.20

Finding the Fourth Proportional to 1,091.28, 1,634.76 and 937.20

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Solution

The fourth proportional to 1,091.28, 1,634.76 and 937.20 is: 1,403.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091.28 : 1,634.76 = 937.20 : x
  2. Step 2: Convert to fraction form
    1,091.28/1,634.76 = 937.20/x
  3. Step 3: Cross multiply
    1,091.28x = 1,634.76 × 937.20
  4. Step 4: Simplify right side
    1,091.28x = 1,532,097.07
  5. Step 5: Solve for x
    x = 1,532,097.07/1,091.28
  6. Step 6: Final answer
    x = 1,403.94

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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.