Home / 2,008.47-3,012.72-621.78

Finding the Fourth Proportional to 2,008.47, 3,012.72 and 621.78

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Solution

The fourth proportional to 2,008.47, 3,012.72 and 621.78 is: 932.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,008.47 : 3,012.72 = 621.78 : x
  2. Step 2: Convert to fraction form
    2,008.47/3,012.72 = 621.78/x
  3. Step 3: Cross multiply
    2,008.47x = 3,012.72 × 621.78
  4. Step 4: Simplify right side
    2,008.47x = 1,873,249.04
  5. Step 5: Solve for x
    x = 1,873,249.04/2,008.47
  6. Step 6: Final answer
    x = 932.67

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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.