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Finding the Fourth Proportional to 8,991.68, 12,410.15 and 5,217.26

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Solution

The fourth proportional to 8,991.68, 12,410.15 and 5,217.26 is: 7,200.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.68 : 12,410.15 = 5,217.26 : x
  2. Step 2: Convert to fraction form
    8,991.68/12,410.15 = 5,217.26/x
  3. Step 3: Cross multiply
    8,991.68x = 12,410.15 × 5,217.26
  4. Step 4: Simplify right side
    8,991.68x = 64,746,891.05
  5. Step 5: Solve for x
    x = 64,746,891.05/8,991.68
  6. Step 6: Final answer
    x = 7,200.76

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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.