Home / 5,081.22-7,621.83-1,618.47

Finding the Fourth Proportional to 5,081.22, 7,621.83 and 1,618.47

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Solution

The fourth proportional to 5,081.22, 7,621.83 and 1,618.47 is: 2,427.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,081.22 : 7,621.83 = 1,618.47 : x
  2. Step 2: Convert to fraction form
    5,081.22/7,621.83 = 1,618.47/x
  3. Step 3: Cross multiply
    5,081.22x = 7,621.83 × 1,618.47
  4. Step 4: Simplify right side
    5,081.22x = 12,335,703.20
  5. Step 5: Solve for x
    x = 12,335,703.20/5,081.22
  6. Step 6: Final answer
    x = 2,427.71

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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.