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Finding the Fourth Proportional to 1,992.59, 2,749.14 and 1,329.56

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Solution

The fourth proportional to 1,992.59, 2,749.14 and 1,329.56 is: 1,834.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.59 : 2,749.14 = 1,329.56 : x
  2. Step 2: Convert to fraction form
    1,992.59/2,749.14 = 1,329.56/x
  3. Step 3: Cross multiply
    1,992.59x = 2,749.14 × 1,329.56
  4. Step 4: Simplify right side
    1,992.59x = 3,655,146.58
  5. Step 5: Solve for x
    x = 3,655,146.58/1,992.59
  6. Step 6: Final answer
    x = 1,834.37

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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.