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Finding the Fourth Proportional to 6,369.48, 8,789.90 and 3,536.80

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Solution

The fourth proportional to 6,369.48, 8,789.90 and 3,536.80 is: 4,880.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,369.48 : 8,789.90 = 3,536.80 : x
  2. Step 2: Convert to fraction form
    6,369.48/8,789.90 = 3,536.80/x
  3. Step 3: Cross multiply
    6,369.48x = 8,789.90 × 3,536.80
  4. Step 4: Simplify right side
    6,369.48x = 31,088,078.66
  5. Step 5: Solve for x
    x = 31,088,078.66/6,369.48
  6. Step 6: Final answer
    x = 4,880.79

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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.