Home / 8,119.97-12,178.58-2,275.23

Finding the Fourth Proportional to 8,119.97, 12,178.58 and 2,275.23

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Solution

The fourth proportional to 8,119.97, 12,178.58 and 2,275.23 is: 3,412.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.97 : 12,178.58 = 2,275.23 : x
  2. Step 2: Convert to fraction form
    8,119.97/12,178.58 = 2,275.23/x
  3. Step 3: Cross multiply
    8,119.97x = 12,178.58 × 2,275.23
  4. Step 4: Simplify right side
    8,119.97x = 27,709,059.20
  5. Step 5: Solve for x
    x = 27,709,059.20/8,119.97
  6. Step 6: Final answer
    x = 3,412.46

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Half scale
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Double scale
Find fourth proportional to 8,120.97, 12,180.07 and 2,276.23
Similar ratio
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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.