Home / 7,211.28-10,809.12-3,505.26

Finding the Fourth Proportional to 7,211.28, 10,809.12 and 3,505.26

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Solution

The fourth proportional to 7,211.28, 10,809.12 and 3,505.26 is: 5,254.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,211.28 : 10,809.12 = 3,505.26 : x
  2. Step 2: Convert to fraction form
    7,211.28/10,809.12 = 3,505.26/x
  3. Step 3: Cross multiply
    7,211.28x = 10,809.12 × 3,505.26
  4. Step 4: Simplify right side
    7,211.28x = 37,888,775.97
  5. Step 5: Solve for x
    x = 37,888,775.97/7,211.28
  6. Step 6: Final answer
    x = 5,254.10

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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.