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Finding the Fourth Proportional to 6,663.84, 9,196.14 and 3,638.88

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Solution

The fourth proportional to 6,663.84, 9,196.14 and 3,638.88 is: 5,021.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,663.84 : 9,196.14 = 3,638.88 : x
  2. Step 2: Convert to fraction form
    6,663.84/9,196.14 = 3,638.88/x
  3. Step 3: Cross multiply
    6,663.84x = 9,196.14 × 3,638.88
  4. Step 4: Simplify right side
    6,663.84x = 33,463,649.92
  5. Step 5: Solve for x
    x = 33,463,649.92/6,663.84
  6. Step 6: Final answer
    x = 5,021.68

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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.