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Finding the Fourth Proportional to 6,369.93, 9,556.11 and 1,986.21

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Solution

The fourth proportional to 6,369.93, 9,556.11 and 1,986.21 is: 2,979.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,369.93 : 9,556.11 = 1,986.21 : x
  2. Step 2: Convert to fraction form
    6,369.93/9,556.11 = 1,986.21/x
  3. Step 3: Cross multiply
    6,369.93x = 9,556.11 × 1,986.21
  4. Step 4: Simplify right side
    6,369.93x = 18,980,441.24
  5. Step 5: Solve for x
    x = 18,980,441.24/6,369.93
  6. Step 6: Final answer
    x = 2,979.69

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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.