Home / 2,146.40-2,961.92-1,214.88

Finding the Fourth Proportional to 2,146.40, 2,961.92 and 1,214.88

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Solution

The fourth proportional to 2,146.40, 2,961.92 and 1,214.88 is: 1,676.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.40 : 2,961.92 = 1,214.88 : x
  2. Step 2: Convert to fraction form
    2,146.40/2,961.92 = 1,214.88/x
  3. Step 3: Cross multiply
    2,146.40x = 2,961.92 × 1,214.88
  4. Step 4: Simplify right side
    2,146.40x = 3,598,377.37
  5. Step 5: Solve for x
    x = 3,598,377.37/2,146.40
  6. Step 6: Final answer
    x = 1,676.47

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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.