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Finding the Fourth Proportional to 8,331.66, 11,449.62 and 7,946.19

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Solution

The fourth proportional to 8,331.66, 11,449.62 and 7,946.19 is: 10,919.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,331.66 : 11,449.62 = 7,946.19 : x
  2. Step 2: Convert to fraction form
    8,331.66/11,449.62 = 7,946.19/x
  3. Step 3: Cross multiply
    8,331.66x = 11,449.62 × 7,946.19
  4. Step 4: Simplify right side
    8,331.66x = 90,980,855.95
  5. Step 5: Solve for x
    x = 90,980,855.95/8,331.66
  6. Step 6: Final answer
    x = 10,919.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.