Home / 2,631.21-3,946.88-1,245.19

Finding the Fourth Proportional to 2,631.21, 3,946.88 and 1,245.19

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Solution

The fourth proportional to 2,631.21, 3,946.88 and 1,245.19 is: 1,867.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.21 : 3,946.88 = 1,245.19 : x
  2. Step 2: Convert to fraction form
    2,631.21/3,946.88 = 1,245.19/x
  3. Step 3: Cross multiply
    2,631.21x = 3,946.88 × 1,245.19
  4. Step 4: Simplify right side
    2,631.21x = 4,914,609.28
  5. Step 5: Solve for x
    x = 4,914,609.28/2,631.21
  6. Step 6: Final answer
    x = 1,867.82

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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.