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Finding the Fourth Proportional to 7,968.87, 10,998.86 and 5,169.51

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Solution

The fourth proportional to 7,968.87, 10,998.86 and 5,169.51 is: 7,135.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,968.87 : 10,998.86 = 5,169.51 : x
  2. Step 2: Convert to fraction form
    7,968.87/10,998.86 = 5,169.51/x
  3. Step 3: Cross multiply
    7,968.87x = 10,998.86 × 5,169.51
  4. Step 4: Simplify right side
    7,968.87x = 56,858,690.91
  5. Step 5: Solve for x
    x = 56,858,690.91/7,968.87
  6. Step 6: Final answer
    x = 7,135.10

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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.