Home / 3,212.09-4,430.98-3,121.73

Finding the Fourth Proportional to 3,212.09, 4,430.98 and 3,121.73

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Solution

The fourth proportional to 3,212.09, 4,430.98 and 3,121.73 is: 4,306.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.09 : 4,430.98 = 3,121.73 : x
  2. Step 2: Convert to fraction form
    3,212.09/4,430.98 = 3,121.73/x
  3. Step 3: Cross multiply
    3,212.09x = 4,430.98 × 3,121.73
  4. Step 4: Simplify right side
    3,212.09x = 13,832,323.20
  5. Step 5: Solve for x
    x = 13,832,323.20/3,212.09
  6. Step 6: Final answer
    x = 4,306.33

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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.