Home / 6,109.59-8,431.19-3,315.09

Finding the Fourth Proportional to 6,109.59, 8,431.19 and 3,315.09

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Solution

The fourth proportional to 6,109.59, 8,431.19 and 3,315.09 is: 4,574.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,109.59 : 8,431.19 = 3,315.09 : x
  2. Step 2: Convert to fraction form
    6,109.59/8,431.19 = 3,315.09/x
  3. Step 3: Cross multiply
    6,109.59x = 8,431.19 × 3,315.09
  4. Step 4: Simplify right side
    6,109.59x = 27,950,094.93
  5. Step 5: Solve for x
    x = 27,950,094.93/6,109.59
  6. Step 6: Final answer
    x = 4,574.79

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.