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Finding the Fourth Proportional to 8,151.70, 12,227.55 and 1,995.70

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Solution

The fourth proportional to 8,151.70, 12,227.55 and 1,995.70 is: 2,993.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,151.70 : 12,227.55 = 1,995.70 : x
  2. Step 2: Convert to fraction form
    8,151.70/12,227.55 = 1,995.70/x
  3. Step 3: Cross multiply
    8,151.70x = 12,227.55 × 1,995.70
  4. Step 4: Simplify right side
    8,151.70x = 24,402,521.54
  5. Step 5: Solve for x
    x = 24,402,521.54/8,151.70
  6. Step 6: Final answer
    x = 2,993.55

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Half scale
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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.