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Finding the Fourth Proportional to 6,361.72, 8,777.78 and 6,151.96

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Solution

The fourth proportional to 6,361.72, 8,777.78 and 6,151.96 is: 8,488.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,361.72 : 8,777.78 = 6,151.96 : x
  2. Step 2: Convert to fraction form
    6,361.72/8,777.78 = 6,151.96/x
  3. Step 3: Cross multiply
    6,361.72x = 8,777.78 × 6,151.96
  4. Step 4: Simplify right side
    6,361.72x = 54,000,551.45
  5. Step 5: Solve for x
    x = 54,000,551.45/6,361.72
  6. Step 6: Final answer
    x = 8,488.36

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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.