Home / 2,717.35-3,749.79-1,538.39

Finding the Fourth Proportional to 2,717.35, 3,749.79 and 1,538.39

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Solution

The fourth proportional to 2,717.35, 3,749.79 and 1,538.39 is: 2,122.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.35 : 3,749.79 = 1,538.39 : x
  2. Step 2: Convert to fraction form
    2,717.35/3,749.79 = 1,538.39/x
  3. Step 3: Cross multiply
    2,717.35x = 3,749.79 × 1,538.39
  4. Step 4: Simplify right side
    2,717.35x = 5,768,654.58
  5. Step 5: Solve for x
    x = 5,768,654.58/2,717.35
  6. Step 6: Final answer
    x = 2,122.90

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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.