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Finding the Fourth Proportional to 6,143.88, 9,215.81 and 2,039.88

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Solution

The fourth proportional to 6,143.88, 9,215.81 and 2,039.88 is: 3,059.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,143.88 : 9,215.81 = 2,039.88 : x
  2. Step 2: Convert to fraction form
    6,143.88/9,215.81 = 2,039.88/x
  3. Step 3: Cross multiply
    6,143.88x = 9,215.81 × 2,039.88
  4. Step 4: Simplify right side
    6,143.88x = 18,799,146.50
  5. Step 5: Solve for x
    x = 18,799,146.50/6,143.88
  6. Step 6: Final answer
    x = 3,059.82

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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.