Home / 2,621.67-3,934.93-1,324.05

Finding the Fourth Proportional to 2,621.67, 3,934.93 and 1,324.05

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Solution

The fourth proportional to 2,621.67, 3,934.93 and 1,324.05 is: 1,987.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.67 : 3,934.93 = 1,324.05 : x
  2. Step 2: Convert to fraction form
    2,621.67/3,934.93 = 1,324.05/x
  3. Step 3: Cross multiply
    2,621.67x = 3,934.93 × 1,324.05
  4. Step 4: Simplify right side
    2,621.67x = 5,210,021.08
  5. Step 5: Solve for x
    x = 5,210,021.08/2,621.67
  6. Step 6: Final answer
    x = 1,987.29

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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.