Home / 4,138.40-5,709.48-3,697.76

Finding the Fourth Proportional to 4,138.40, 5,709.48 and 3,697.76

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Solution

The fourth proportional to 4,138.40, 5,709.48 and 3,697.76 is: 5,101.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,138.40 : 5,709.48 = 3,697.76 : x
  2. Step 2: Convert to fraction form
    4,138.40/5,709.48 = 3,697.76/x
  3. Step 3: Cross multiply
    4,138.40x = 5,709.48 × 3,697.76
  4. Step 4: Simplify right side
    4,138.40x = 21,112,286.76
  5. Step 5: Solve for x
    x = 21,112,286.76/4,138.40
  6. Step 6: Final answer
    x = 5,101.56

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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.