Home / 2,209.85-3,049.59-1,215.19

Finding the Fourth Proportional to 2,209.85, 3,049.59 and 1,215.19

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Solution

The fourth proportional to 2,209.85, 3,049.59 and 1,215.19 is: 1,676.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.85 : 3,049.59 = 1,215.19 : x
  2. Step 2: Convert to fraction form
    2,209.85/3,049.59 = 1,215.19/x
  3. Step 3: Cross multiply
    2,209.85x = 3,049.59 × 1,215.19
  4. Step 4: Simplify right side
    2,209.85x = 3,705,825.20
  5. Step 5: Solve for x
    x = 3,705,825.20/2,209.85
  6. Step 6: Final answer
    x = 1,676.96

Related Problems

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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.