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Finding the Fourth Proportional to 6,649.90, 9,176.22 and 3,664.98

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Solution

The fourth proportional to 6,649.90, 9,176.22 and 3,664.98 is: 5,057.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,649.90 : 9,176.22 = 3,664.98 : x
  2. Step 2: Convert to fraction form
    6,649.90/9,176.22 = 3,664.98/x
  3. Step 3: Cross multiply
    6,649.90x = 9,176.22 × 3,664.98
  4. Step 4: Simplify right side
    6,649.90x = 33,630,662.78
  5. Step 5: Solve for x
    x = 33,630,662.78/6,649.90
  6. Step 6: Final answer
    x = 5,057.32

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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.