Home / 7,740.74-11,611.92-3,581.12

Finding the Fourth Proportional to 7,740.74, 11,611.92 and 3,581.12

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Solution

The fourth proportional to 7,740.74, 11,611.92 and 3,581.12 is: 5,372.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,740.74 : 11,611.92 = 3,581.12 : x
  2. Step 2: Convert to fraction form
    7,740.74/11,611.92 = 3,581.12/x
  3. Step 3: Cross multiply
    7,740.74x = 11,611.92 × 3,581.12
  4. Step 4: Simplify right side
    7,740.74x = 41,583,678.95
  5. Step 5: Solve for x
    x = 41,583,678.95/7,740.74
  6. Step 6: Final answer
    x = 5,372.05

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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.