Home / 3,986.10-5,979.15-3,066.30

Finding the Fourth Proportional to 3,986.10, 5,979.15 and 3,066.30

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Solution

The fourth proportional to 3,986.10, 5,979.15 and 3,066.30 is: 4,599.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.10 : 5,979.15 = 3,066.30 : x
  2. Step 2: Convert to fraction form
    3,986.10/5,979.15 = 3,066.30/x
  3. Step 3: Cross multiply
    3,986.10x = 5,979.15 × 3,066.30
  4. Step 4: Simplify right side
    3,986.10x = 18,333,867.65
  5. Step 5: Solve for x
    x = 18,333,867.65/3,986.10
  6. Step 6: Final answer
    x = 4,599.45

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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.