Home / 7,405.28-11,109.78-2,211.14

Finding the Fourth Proportional to 7,405.28, 11,109.78 and 2,211.14

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Solution

The fourth proportional to 7,405.28, 11,109.78 and 2,211.14 is: 3,317.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.28 : 11,109.78 = 2,211.14 : x
  2. Step 2: Convert to fraction form
    7,405.28/11,109.78 = 2,211.14/x
  3. Step 3: Cross multiply
    7,405.28x = 11,109.78 × 2,211.14
  4. Step 4: Simplify right side
    7,405.28x = 24,565,278.95
  5. Step 5: Solve for x
    x = 24,565,278.95/7,405.28
  6. Step 6: Final answer
    x = 3,317.27

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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.