Home / 8,117.38-12,176.10-1,961.38

Finding the Fourth Proportional to 8,117.38, 12,176.10 and 1,961.38

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Solution

The fourth proportional to 8,117.38, 12,176.10 and 1,961.38 is: 2,942.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.38 : 12,176.10 = 1,961.38 : x
  2. Step 2: Convert to fraction form
    8,117.38/12,176.10 = 1,961.38/x
  3. Step 3: Cross multiply
    8,117.38x = 12,176.10 × 1,961.38
  4. Step 4: Simplify right side
    8,117.38x = 23,881,959.02
  5. Step 5: Solve for x
    x = 23,881,959.02/8,117.38
  6. Step 6: Final answer
    x = 2,942.08

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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.