Home / 1,358.35-2,037.78-481.11

Finding the Fourth Proportional to 1,358.35, 2,037.78 and 481.11

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Solution

The fourth proportional to 1,358.35, 2,037.78 and 481.11 is: 721.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.35 : 2,037.78 = 481.11 : x
  2. Step 2: Convert to fraction form
    1,358.35/2,037.78 = 481.11/x
  3. Step 3: Cross multiply
    1,358.35x = 2,037.78 × 481.11
  4. Step 4: Simplify right side
    1,358.35x = 980,396.34
  5. Step 5: Solve for x
    x = 980,396.34/1,358.35
  6. Step 6: Final answer
    x = 721.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.