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Finding the Fourth Proportional to 6,090.90, 8,400.17 and 3,965.63

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Solution

The fourth proportional to 6,090.90, 8,400.17 and 3,965.63 is: 5,469.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,090.90 : 8,400.17 = 3,965.63 : x
  2. Step 2: Convert to fraction form
    6,090.90/8,400.17 = 3,965.63/x
  3. Step 3: Cross multiply
    6,090.90x = 8,400.17 × 3,965.63
  4. Step 4: Simplify right side
    6,090.90x = 33,311,934.07
  5. Step 5: Solve for x
    x = 33,311,934.07/6,090.90
  6. Step 6: Final answer
    x = 5,469.14

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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.