Home / 3,930.89-5,896.87-1,333.13

Finding the Fourth Proportional to 3,930.89, 5,896.87 and 1,333.13

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Solution

The fourth proportional to 3,930.89, 5,896.87 and 1,333.13 is: 1,999.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.89 : 5,896.87 = 1,333.13 : x
  2. Step 2: Convert to fraction form
    3,930.89/5,896.87 = 1,333.13/x
  3. Step 3: Cross multiply
    3,930.89x = 5,896.87 × 1,333.13
  4. Step 4: Simplify right side
    3,930.89x = 7,861,261.49
  5. Step 5: Solve for x
    x = 7,861,261.49/3,930.89
  6. Step 6: Final answer
    x = 1,999.87

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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.