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Finding the Fourth Proportional to 8,343.77, 11,500.65 and 5,921.97

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Solution

The fourth proportional to 8,343.77, 11,500.65 and 5,921.97 is: 8,162.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,343.77 : 11,500.65 = 5,921.97 : x
  2. Step 2: Convert to fraction form
    8,343.77/11,500.65 = 5,921.97/x
  3. Step 3: Cross multiply
    8,343.77x = 11,500.65 × 5,921.97
  4. Step 4: Simplify right side
    8,343.77x = 68,106,462.99
  5. Step 5: Solve for x
    x = 68,106,462.99/8,343.77
  6. Step 6: Final answer
    x = 8,162.56

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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.