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Finding the Fourth Proportional to 7,076.99, 9,766.22 and 3,890.49

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Solution

The fourth proportional to 7,076.99, 9,766.22 and 3,890.49 is: 5,368.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,076.99 : 9,766.22 = 3,890.49 : x
  2. Step 2: Convert to fraction form
    7,076.99/9,766.22 = 3,890.49/x
  3. Step 3: Cross multiply
    7,076.99x = 9,766.22 × 3,890.49
  4. Step 4: Simplify right side
    7,076.99x = 37,995,361.80
  5. Step 5: Solve for x
    x = 37,995,361.80/7,076.99
  6. Step 6: Final answer
    x = 5,368.86

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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.