Home / 8,112.30-12,175.65-6,945.90

Finding the Fourth Proportional to 8,112.30, 12,175.65 and 6,945.90

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Solution

The fourth proportional to 8,112.30, 12,175.65 and 6,945.90 is: 10,425.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.30 : 12,175.65 = 6,945.90 : x
  2. Step 2: Convert to fraction form
    8,112.30/12,175.65 = 6,945.90/x
  3. Step 3: Cross multiply
    8,112.30x = 12,175.65 × 6,945.90
  4. Step 4: Simplify right side
    8,112.30x = 84,570,847.34
  5. Step 5: Solve for x
    x = 84,570,847.34/8,112.30
  6. Step 6: Final answer
    x = 10,425.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.