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Finding the Fourth Proportional to 8,679.02, 11,968.10 and 7,424.24

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Solution

The fourth proportional to 8,679.02, 11,968.10 and 7,424.24 is: 10,237.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.02 : 11,968.10 = 7,424.24 : x
  2. Step 2: Convert to fraction form
    8,679.02/11,968.10 = 7,424.24/x
  3. Step 3: Cross multiply
    8,679.02x = 11,968.10 × 7,424.24
  4. Step 4: Simplify right side
    8,679.02x = 88,854,046.74
  5. Step 5: Solve for x
    x = 88,854,046.74/8,679.02
  6. Step 6: Final answer
    x = 10,237.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.