Home / 2,008.10-3,012.35-691.67

Finding the Fourth Proportional to 2,008.10, 3,012.35 and 691.67

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Solution

The fourth proportional to 2,008.10, 3,012.35 and 691.67 is: 1,037.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,008.10 : 3,012.35 = 691.67 : x
  2. Step 2: Convert to fraction form
    2,008.10/3,012.35 = 691.67/x
  3. Step 3: Cross multiply
    2,008.10x = 3,012.35 × 691.67
  4. Step 4: Simplify right side
    2,008.10x = 2,083,556.20
  5. Step 5: Solve for x
    x = 2,083,556.20/2,008.10
  6. Step 6: Final answer
    x = 1,037.57

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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.