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Finding the Fourth Proportional to 8,448.90, 12,673.35 and 8,266.65

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Solution

The fourth proportional to 8,448.90, 12,673.35 and 8,266.65 is: 12,399.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,448.90 : 12,673.35 = 8,266.65 : x
  2. Step 2: Convert to fraction form
    8,448.90/12,673.35 = 8,266.65/x
  3. Step 3: Cross multiply
    8,448.90x = 12,673.35 × 8,266.65
  4. Step 4: Simplify right side
    8,448.90x = 104,766,148.78
  5. Step 5: Solve for x
    x = 104,766,148.78/8,448.90
  6. Step 6: Final answer
    x = 12,399.98

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Double scale
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Similar ratio
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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.