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Finding the Fourth Proportional to 6,663.90, 9,991.89 and 2,281.26

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Solution

The fourth proportional to 6,663.90, 9,991.89 and 2,281.26 is: 3,420.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,663.90 : 9,991.89 = 2,281.26 : x
  2. Step 2: Convert to fraction form
    6,663.90/9,991.89 = 2,281.26/x
  3. Step 3: Cross multiply
    6,663.90x = 9,991.89 × 2,281.26
  4. Step 4: Simplify right side
    6,663.90x = 22,794,098.98
  5. Step 5: Solve for x
    x = 22,794,098.98/6,663.90
  6. Step 6: Final answer
    x = 3,420.53

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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.