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Finding the Fourth Proportional to 6,359.44, 8,778.36 and 4,784.80

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Solution

The fourth proportional to 6,359.44, 8,778.36 and 4,784.80 is: 6,604.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,359.44 : 8,778.36 = 4,784.80 : x
  2. Step 2: Convert to fraction form
    6,359.44/8,778.36 = 4,784.80/x
  3. Step 3: Cross multiply
    6,359.44x = 8,778.36 × 4,784.80
  4. Step 4: Simplify right side
    6,359.44x = 42,002,696.93
  5. Step 5: Solve for x
    x = 42,002,696.93/6,359.44
  6. Step 6: Final answer
    x = 6,604.78

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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.