Home / 4,138.60-5,709.54-2,738.92

Finding the Fourth Proportional to 4,138.60, 5,709.54 and 2,738.92

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Solution

The fourth proportional to 4,138.60, 5,709.54 and 2,738.92 is: 3,778.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,138.60 : 5,709.54 = 2,738.92 : x
  2. Step 2: Convert to fraction form
    4,138.60/5,709.54 = 2,738.92/x
  3. Step 3: Cross multiply
    4,138.60x = 5,709.54 × 2,738.92
  4. Step 4: Simplify right side
    4,138.60x = 15,637,973.30
  5. Step 5: Solve for x
    x = 15,637,973.30/4,138.60
  6. Step 6: Final answer
    x = 3,778.57

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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.