Home / 8,669.56-11,949.84-6,777.80

Finding the Fourth Proportional to 8,669.56, 11,949.84 and 6,777.80

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Solution

The fourth proportional to 8,669.56, 11,949.84 and 6,777.80 is: 9,342.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.56 : 11,949.84 = 6,777.80 : x
  2. Step 2: Convert to fraction form
    8,669.56/11,949.84 = 6,777.80/x
  3. Step 3: Cross multiply
    8,669.56x = 11,949.84 × 6,777.80
  4. Step 4: Simplify right side
    8,669.56x = 80,993,625.55
  5. Step 5: Solve for x
    x = 80,993,625.55/8,669.56
  6. Step 6: Final answer
    x = 9,342.30

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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.