Home / 8,119.13-12,178.69-1,963.13

Finding the Fourth Proportional to 8,119.13, 12,178.69 and 1,963.13

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Solution

The fourth proportional to 8,119.13, 12,178.69 and 1,963.13 is: 2,944.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.13 : 12,178.69 = 1,963.13 : x
  2. Step 2: Convert to fraction form
    8,119.13/12,178.69 = 1,963.13/x
  3. Step 3: Cross multiply
    8,119.13x = 12,178.69 × 1,963.13
  4. Step 4: Simplify right side
    8,119.13x = 23,908,285.90
  5. Step 5: Solve for x
    x = 23,908,285.90/8,119.13
  6. Step 6: Final answer
    x = 2,944.69

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Double scale
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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.