Home / 3,221.04-4,406.70-3,207.12

Finding the Fourth Proportional to 3,221.04, 4,406.70 and 3,207.12

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Solution

The fourth proportional to 3,221.04, 4,406.70 and 3,207.12 is: 4,387.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.04 : 4,406.70 = 3,207.12 : x
  2. Step 2: Convert to fraction form
    3,221.04/4,406.70 = 3,207.12/x
  3. Step 3: Cross multiply
    3,221.04x = 4,406.70 × 3,207.12
  4. Step 4: Simplify right side
    3,221.04x = 14,132,815.70
  5. Step 5: Solve for x
    x = 14,132,815.70/3,221.04
  6. Step 6: Final answer
    x = 4,387.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.