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Finding the Fourth Proportional to 6,433.80, 8,877.94 and 3,917.24

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Solution

The fourth proportional to 6,433.80, 8,877.94 and 3,917.24 is: 5,405.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,433.80 : 8,877.94 = 3,917.24 : x
  2. Step 2: Convert to fraction form
    6,433.80/8,877.94 = 3,917.24/x
  3. Step 3: Cross multiply
    6,433.80x = 8,877.94 × 3,917.24
  4. Step 4: Simplify right side
    6,433.80x = 34,777,021.69
  5. Step 5: Solve for x
    x = 34,777,021.69/6,433.80
  6. Step 6: Final answer
    x = 5,405.36

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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.