Home / 8,917.11-12,305.43-4,938.21

Finding the Fourth Proportional to 8,917.11, 12,305.43 and 4,938.21

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Solution

The fourth proportional to 8,917.11, 12,305.43 and 4,938.21 is: 6,814.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.11 : 12,305.43 = 4,938.21 : x
  2. Step 2: Convert to fraction form
    8,917.11/12,305.43 = 4,938.21/x
  3. Step 3: Cross multiply
    8,917.11x = 12,305.43 × 4,938.21
  4. Step 4: Simplify right side
    8,917.11x = 60,766,797.48
  5. Step 5: Solve for x
    x = 60,766,797.48/8,917.11
  6. Step 6: Final answer
    x = 6,814.63

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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.