Home / 3,281.39-4,530.20-2,161.92

Finding the Fourth Proportional to 3,281.39, 4,530.20 and 2,161.92

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Solution

The fourth proportional to 3,281.39, 4,530.20 and 2,161.92 is: 2,984.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.39 : 4,530.20 = 2,161.92 : x
  2. Step 2: Convert to fraction form
    3,281.39/4,530.20 = 2,161.92/x
  3. Step 3: Cross multiply
    3,281.39x = 4,530.20 × 2,161.92
  4. Step 4: Simplify right side
    3,281.39x = 9,793,896.52
  5. Step 5: Solve for x
    x = 9,793,896.52/3,281.39
  6. Step 6: Final answer
    x = 2,984.68

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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.