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Finding the Fourth Proportional to 6,665.13, 9,994.20 and 1,984.50

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Solution

The fourth proportional to 6,665.13, 9,994.20 and 1,984.50 is: 2,975.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,665.13 : 9,994.20 = 1,984.50 : x
  2. Step 2: Convert to fraction form
    6,665.13/9,994.20 = 1,984.50/x
  3. Step 3: Cross multiply
    6,665.13x = 9,994.20 × 1,984.50
  4. Step 4: Simplify right side
    6,665.13x = 19,833,489.90
  5. Step 5: Solve for x
    x = 19,833,489.90/6,665.13
  6. Step 6: Final answer
    x = 2,975.71

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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.