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Finding the Fourth Proportional to 7,759.01, 11,639.19 and 2,212.22

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Solution

The fourth proportional to 7,759.01, 11,639.19 and 2,212.22 is: 3,318.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,759.01 : 11,639.19 = 2,212.22 : x
  2. Step 2: Convert to fraction form
    7,759.01/11,639.19 = 2,212.22/x
  3. Step 3: Cross multiply
    7,759.01x = 11,639.19 × 2,212.22
  4. Step 4: Simplify right side
    7,759.01x = 25,748,390.71
  5. Step 5: Solve for x
    x = 25,748,390.71/7,759.01
  6. Step 6: Final answer
    x = 3,318.52

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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.