Home / 2,339.20-3,221.04-2,131.84

Finding the Fourth Proportional to 2,339.20, 3,221.04 and 2,131.84

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Solution

The fourth proportional to 2,339.20, 3,221.04 and 2,131.84 is: 2,935.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,339.20 : 3,221.04 = 2,131.84 : x
  2. Step 2: Convert to fraction form
    2,339.20/3,221.04 = 2,131.84/x
  3. Step 3: Cross multiply
    2,339.20x = 3,221.04 × 2,131.84
  4. Step 4: Simplify right side
    2,339.20x = 6,866,741.91
  5. Step 5: Solve for x
    x = 6,866,741.91/2,339.20
  6. Step 6: Final answer
    x = 2,935.51

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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.