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Finding the Fourth Proportional to 8,879.91, 13,310.38 and 6,681.84

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Solution

The fourth proportional to 8,879.91, 13,310.38 and 6,681.84 is: 10,015.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.91 : 13,310.38 = 6,681.84 : x
  2. Step 2: Convert to fraction form
    8,879.91/13,310.38 = 6,681.84/x
  3. Step 3: Cross multiply
    8,879.91x = 13,310.38 × 6,681.84
  4. Step 4: Simplify right side
    8,879.91x = 88,937,829.50
  5. Step 5: Solve for x
    x = 88,937,829.50/8,879.91
  6. Step 6: Final answer
    x = 10,015.62

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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.