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Finding the Fourth Proportional to 7,448.81, 11,169.80 and 4,448.21

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Solution

The fourth proportional to 7,448.81, 11,169.80 and 4,448.21 is: 6,670.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,448.81 : 11,169.80 = 4,448.21 : x
  2. Step 2: Convert to fraction form
    7,448.81/11,169.80 = 4,448.21/x
  3. Step 3: Cross multiply
    7,448.81x = 11,169.80 × 4,448.21
  4. Step 4: Simplify right side
    7,448.81x = 49,685,571.33
  5. Step 5: Solve for x
    x = 49,685,571.33/7,448.81
  6. Step 6: Final answer
    x = 6,670.27

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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.