Home / 8,102.57-12,132.81-6,940.05

Finding the Fourth Proportional to 8,102.57, 12,132.81 and 6,940.05

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Solution

The fourth proportional to 8,102.57, 12,132.81 and 6,940.05 is: 10,392.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,102.57 : 12,132.81 = 6,940.05 : x
  2. Step 2: Convert to fraction form
    8,102.57/12,132.81 = 6,940.05/x
  3. Step 3: Cross multiply
    8,102.57x = 12,132.81 × 6,940.05
  4. Step 4: Simplify right side
    8,102.57x = 84,202,308.04
  5. Step 5: Solve for x
    x = 84,202,308.04/8,102.57
  6. Step 6: Final answer
    x = 10,392.06

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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.