Home / 3,221.85-4,829.40-1,348.81

Finding the Fourth Proportional to 3,221.85, 4,829.40 and 1,348.81

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Solution

The fourth proportional to 3,221.85, 4,829.40 and 1,348.81 is: 2,021.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.85 : 4,829.40 = 1,348.81 : x
  2. Step 2: Convert to fraction form
    3,221.85/4,829.40 = 1,348.81/x
  3. Step 3: Cross multiply
    3,221.85x = 4,829.40 × 1,348.81
  4. Step 4: Simplify right side
    3,221.85x = 6,513,955.09
  5. Step 5: Solve for x
    x = 6,513,955.09/3,221.85
  6. Step 6: Final answer
    x = 2,021.81

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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.