Home / 4,087.89-6,131.25-1,314.20

Finding the Fourth Proportional to 4,087.89, 6,131.25 and 1,314.20

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Solution

The fourth proportional to 4,087.89, 6,131.25 and 1,314.20 is: 1,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087.89 : 6,131.25 = 1,314.20 : x
  2. Step 2: Convert to fraction form
    4,087.89/6,131.25 = 1,314.20/x
  3. Step 3: Cross multiply
    4,087.89x = 6,131.25 × 1,314.20
  4. Step 4: Simplify right side
    4,087.89x = 8,057,658.09
  5. Step 5: Solve for x
    x = 8,057,658.09/4,087.89
  6. Step 6: Final answer
    x = 1,971.10

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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.