Home / 2,717.32-3,749.90-1,538.39

Finding the Fourth Proportional to 2,717.32, 3,749.90 and 1,538.39

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Solution

The fourth proportional to 2,717.32, 3,749.90 and 1,538.39 is: 2,122.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.32 : 3,749.90 = 1,538.39 : x
  2. Step 2: Convert to fraction form
    2,717.32/3,749.90 = 1,538.39/x
  3. Step 3: Cross multiply
    2,717.32x = 3,749.90 × 1,538.39
  4. Step 4: Simplify right side
    2,717.32x = 5,768,821.88
  5. Step 5: Solve for x
    x = 5,768,821.88/2,717.32
  6. Step 6: Final answer
    x = 2,122.98

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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.