Home / 7,212.29-10,809.72-3,508.97

Finding the Fourth Proportional to 7,212.29, 10,809.72 and 3,508.97

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Solution

The fourth proportional to 7,212.29, 10,809.72 and 3,508.97 is: 5,259.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.29 : 10,809.72 = 3,508.97 : x
  2. Step 2: Convert to fraction form
    7,212.29/10,809.72 = 3,508.97/x
  3. Step 3: Cross multiply
    7,212.29x = 10,809.72 × 3,508.97
  4. Step 4: Simplify right side
    7,212.29x = 37,930,929.14
  5. Step 5: Solve for x
    x = 37,930,929.14/7,212.29
  6. Step 6: Final answer
    x = 5,259.21

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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.