Home / 3,105.20-4,281.96-2,162.07

Finding the Fourth Proportional to 3,105.20, 4,281.96 and 2,162.07

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Solution

The fourth proportional to 3,105.20, 4,281.96 and 2,162.07 is: 2,981.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.20 : 4,281.96 = 2,162.07 : x
  2. Step 2: Convert to fraction form
    3,105.20/4,281.96 = 2,162.07/x
  3. Step 3: Cross multiply
    3,105.20x = 4,281.96 × 2,162.07
  4. Step 4: Simplify right side
    3,105.20x = 9,257,897.26
  5. Step 5: Solve for x
    x = 9,257,897.26/3,105.20
  6. Step 6: Final answer
    x = 2,981.42

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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.