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Finding the Fourth Proportional to 8,080.68, 12,126.48 and 7,090.92

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Solution

The fourth proportional to 8,080.68, 12,126.48 and 7,090.92 is: 10,641.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,080.68 : 12,126.48 = 7,090.92 : x
  2. Step 2: Convert to fraction form
    8,080.68/12,126.48 = 7,090.92/x
  3. Step 3: Cross multiply
    8,080.68x = 12,126.48 × 7,090.92
  4. Step 4: Simplify right side
    8,080.68x = 85,987,899.56
  5. Step 5: Solve for x
    x = 85,987,899.56/8,080.68
  6. Step 6: Final answer
    x = 10,641.17

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Double scale
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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.