Home / 5,218.71-7,821.59-2,622.39

Finding the Fourth Proportional to 5,218.71, 7,821.59 and 2,622.39

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Solution

The fourth proportional to 5,218.71, 7,821.59 and 2,622.39 is: 3,930.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.71 : 7,821.59 = 2,622.39 : x
  2. Step 2: Convert to fraction form
    5,218.71/7,821.59 = 2,622.39/x
  3. Step 3: Cross multiply
    5,218.71x = 7,821.59 × 2,622.39
  4. Step 4: Simplify right side
    5,218.71x = 20,511,246.29
  5. Step 5: Solve for x
    x = 20,511,246.29/5,218.71
  6. Step 6: Final answer
    x = 3,930.33

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1.5x scale

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.