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Finding the Fourth Proportional to 6,141.96, 9,211.02 and 1,980.92

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Solution

The fourth proportional to 6,141.96, 9,211.02 and 1,980.92 is: 2,970.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,141.96 : 9,211.02 = 1,980.92 : x
  2. Step 2: Convert to fraction form
    6,141.96/9,211.02 = 1,980.92/x
  3. Step 3: Cross multiply
    6,141.96x = 9,211.02 × 1,980.92
  4. Step 4: Simplify right side
    6,141.96x = 18,246,293.74
  5. Step 5: Solve for x
    x = 18,246,293.74/6,141.96
  6. Step 6: Final answer
    x = 2,970.76

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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.