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Finding the Fourth Proportional to 6,645.42, 9,104.27 and 6,396.30

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Solution

The fourth proportional to 6,645.42, 9,104.27 and 6,396.30 is: 8,762.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,645.42 : 9,104.27 = 6,396.30 : x
  2. Step 2: Convert to fraction form
    6,645.42/9,104.27 = 6,396.30/x
  3. Step 3: Cross multiply
    6,645.42x = 9,104.27 × 6,396.30
  4. Step 4: Simplify right side
    6,645.42x = 58,233,642.20
  5. Step 5: Solve for x
    x = 58,233,642.20/6,645.42
  6. Step 6: Final answer
    x = 8,762.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.