Home / 2,221.16-3,332.70-2,149.80

Finding the Fourth Proportional to 2,221.16, 3,332.70 and 2,149.80

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Solution

The fourth proportional to 2,221.16, 3,332.70 and 2,149.80 is: 3,225.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.16 : 3,332.70 = 2,149.80 : x
  2. Step 2: Convert to fraction form
    2,221.16/3,332.70 = 2,149.80/x
  3. Step 3: Cross multiply
    2,221.16x = 3,332.70 × 2,149.80
  4. Step 4: Simplify right side
    2,221.16x = 7,164,638.46
  5. Step 5: Solve for x
    x = 7,164,638.46/2,221.16
  6. Step 6: Final answer
    x = 3,225.63

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1.5x scale

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.