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Finding the Fourth Proportional to 6,649.43, 9,180.15 and 5,911.39

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Solution

The fourth proportional to 6,649.43, 9,180.15 and 5,911.39 is: 8,161.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,649.43 : 9,180.15 = 5,911.39 : x
  2. Step 2: Convert to fraction form
    6,649.43/9,180.15 = 5,911.39/x
  3. Step 3: Cross multiply
    6,649.43x = 9,180.15 × 5,911.39
  4. Step 4: Simplify right side
    6,649.43x = 54,267,401.01
  5. Step 5: Solve for x
    x = 54,267,401.01/6,649.43
  6. Step 6: Final answer
    x = 8,161.21

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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.