Home / 2,672.40-4,011.12-1,212

Finding the Fourth Proportional to 2,672.40, 4,011.12 and 1,212

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Solution

The fourth proportional to 2,672.40, 4,011.12 and 1,212 is: 1,819.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.40 : 4,011.12 = 1,212 : x
  2. Step 2: Convert to fraction form
    2,672.40/4,011.12 = 1,212/x
  3. Step 3: Cross multiply
    2,672.40x = 4,011.12 × 1,212
  4. Step 4: Simplify right side
    2,672.40x = 4,861,477.44
  5. Step 5: Solve for x
    x = 4,861,477.44/2,672.40
  6. Step 6: Final answer
    x = 1,819.14

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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.