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Finding the Fourth Proportional to 6,665.31, 9,998.01 and 3,911.22

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Solution

The fourth proportional to 6,665.31, 9,998.01 and 3,911.22 is: 5,866.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,665.31 : 9,998.01 = 3,911.22 : x
  2. Step 2: Convert to fraction form
    6,665.31/9,998.01 = 3,911.22/x
  3. Step 3: Cross multiply
    6,665.31x = 9,998.01 × 3,911.22
  4. Step 4: Simplify right side
    6,665.31x = 39,104,416.67
  5. Step 5: Solve for x
    x = 39,104,416.67/6,665.31
  6. Step 6: Final answer
    x = 5,866.86

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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.