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Finding the Fourth Proportional to 8,757.16, 12,090.78 and 6,736.98

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Solution

The fourth proportional to 8,757.16, 12,090.78 and 6,736.98 is: 9,301.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.16 : 12,090.78 = 6,736.98 : x
  2. Step 2: Convert to fraction form
    8,757.16/12,090.78 = 6,736.98/x
  3. Step 3: Cross multiply
    8,757.16x = 12,090.78 × 6,736.98
  4. Step 4: Simplify right side
    8,757.16x = 81,455,343.04
  5. Step 5: Solve for x
    x = 81,455,343.04/8,757.16
  6. Step 6: Final answer
    x = 9,301.57

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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.