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Finding the Fourth Proportional to 8,879.64, 13,309.11 and 6,681.30

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Solution

The fourth proportional to 8,879.64, 13,309.11 and 6,681.30 is: 10,014.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.64 : 13,309.11 = 6,681.30 : x
  2. Step 2: Convert to fraction form
    8,879.64/13,309.11 = 6,681.30/x
  3. Step 3: Cross multiply
    8,879.64x = 13,309.11 × 6,681.30
  4. Step 4: Simplify right side
    8,879.64x = 88,922,156.64
  5. Step 5: Solve for x
    x = 88,922,156.64/8,879.64
  6. Step 6: Final answer
    x = 10,014.16

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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.