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Finding the Fourth Proportional to 8,648.01, 12,976.11 and 5,144.94

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Solution

The fourth proportional to 8,648.01, 12,976.11 and 5,144.94 is: 7,719.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.01 : 12,976.11 = 5,144.94 : x
  2. Step 2: Convert to fraction form
    8,648.01/12,976.11 = 5,144.94/x
  3. Step 3: Cross multiply
    8,648.01x = 12,976.11 × 5,144.94
  4. Step 4: Simplify right side
    8,648.01x = 66,761,261.03
  5. Step 5: Solve for x
    x = 66,761,261.03/8,648.01
  6. Step 6: Final answer
    x = 7,719.84

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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.