Home / 8,120.43-11,171.04-6,625.05

Finding the Fourth Proportional to 8,120.43, 11,171.04 and 6,625.05

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Solution

The fourth proportional to 8,120.43, 11,171.04 and 6,625.05 is: 9,113.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.43 : 11,171.04 = 6,625.05 : x
  2. Step 2: Convert to fraction form
    8,120.43/11,171.04 = 6,625.05/x
  3. Step 3: Cross multiply
    8,120.43x = 11,171.04 × 6,625.05
  4. Step 4: Simplify right side
    8,120.43x = 74,008,698.55
  5. Step 5: Solve for x
    x = 74,008,698.55/8,120.43
  6. Step 6: Final answer
    x = 9,113.89

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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.