Home / 3,189.50-4,401.56-1,930.33

Finding the Fourth Proportional to 3,189.50, 4,401.56 and 1,930.33

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Solution

The fourth proportional to 3,189.50, 4,401.56 and 1,930.33 is: 2,663.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.50 : 4,401.56 = 1,930.33 : x
  2. Step 2: Convert to fraction form
    3,189.50/4,401.56 = 1,930.33/x
  3. Step 3: Cross multiply
    3,189.50x = 4,401.56 × 1,930.33
  4. Step 4: Simplify right side
    3,189.50x = 8,496,463.31
  5. Step 5: Solve for x
    x = 8,496,463.31/3,189.50
  6. Step 6: Final answer
    x = 2,663.89

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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.