Home / 2,749.21-3,781.92-2,411.59

Finding the Fourth Proportional to 2,749.21, 3,781.92 and 2,411.59

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Solution

The fourth proportional to 2,749.21, 3,781.92 and 2,411.59 is: 3,317.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,749.21 : 3,781.92 = 2,411.59 : x
  2. Step 2: Convert to fraction form
    2,749.21/3,781.92 = 2,411.59/x
  3. Step 3: Cross multiply
    2,749.21x = 3,781.92 × 2,411.59
  4. Step 4: Simplify right side
    2,749.21x = 9,120,440.45
  5. Step 5: Solve for x
    x = 9,120,440.45/2,749.21
  6. Step 6: Final answer
    x = 3,317.48

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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.