Home / 8,101.94-12,155.43-6,878.30

Finding the Fourth Proportional to 8,101.94, 12,155.43 and 6,878.30

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Solution

The fourth proportional to 8,101.94, 12,155.43 and 6,878.30 is: 10,319.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,101.94 : 12,155.43 = 6,878.30 : x
  2. Step 2: Convert to fraction form
    8,101.94/12,155.43 = 6,878.30/x
  3. Step 3: Cross multiply
    8,101.94x = 12,155.43 × 6,878.30
  4. Step 4: Simplify right side
    8,101.94x = 83,608,694.17
  5. Step 5: Solve for x
    x = 83,608,694.17/8,101.94
  6. Step 6: Final answer
    x = 10,319.59

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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.