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Finding the Fourth Proportional to 8,879.41, 13,309.64 and 6,681.34

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Solution

The fourth proportional to 8,879.41, 13,309.64 and 6,681.34 is: 10,014.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.41 : 13,309.64 = 6,681.34 : x
  2. Step 2: Convert to fraction form
    8,879.41/13,309.64 = 6,681.34/x
  3. Step 3: Cross multiply
    8,879.41x = 13,309.64 × 6,681.34
  4. Step 4: Simplify right side
    8,879.41x = 88,926,130.16
  5. Step 5: Solve for x
    x = 88,926,130.16/8,879.41
  6. Step 6: Final answer
    x = 10,014.87

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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.