Home / 2,621.40-3,926.88-1,581.68

Finding the Fourth Proportional to 2,621.40, 3,926.88 and 1,581.68

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Solution

The fourth proportional to 2,621.40, 3,926.88 and 1,581.68 is: 2,369.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.40 : 3,926.88 = 1,581.68 : x
  2. Step 2: Convert to fraction form
    2,621.40/3,926.88 = 1,581.68/x
  3. Step 3: Cross multiply
    2,621.40x = 3,926.88 × 1,581.68
  4. Step 4: Simplify right side
    2,621.40x = 6,211,067.56
  5. Step 5: Solve for x
    x = 6,211,067.56/2,621.40
  6. Step 6: Final answer
    x = 2,369.37

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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.