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Finding the Fourth Proportional to 6,786.80, 9,365.92 and 4,800.80

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Solution

The fourth proportional to 6,786.80, 9,365.92 and 4,800.80 is: 6,625.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,786.80 : 9,365.92 = 4,800.80 : x
  2. Step 2: Convert to fraction form
    6,786.80/9,365.92 = 4,800.80/x
  3. Step 3: Cross multiply
    6,786.80x = 9,365.92 × 4,800.80
  4. Step 4: Simplify right side
    6,786.80x = 44,963,908.74
  5. Step 5: Solve for x
    x = 44,963,908.74/6,786.80
  6. Step 6: Final answer
    x = 6,625.20

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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.