Home / 3,939.67-5,910.21-1,307.34

Finding the Fourth Proportional to 3,939.67, 5,910.21 and 1,307.34

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Solution

The fourth proportional to 3,939.67, 5,910.21 and 1,307.34 is: 1,961.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.67 : 5,910.21 = 1,307.34 : x
  2. Step 2: Convert to fraction form
    3,939.67/5,910.21 = 1,307.34/x
  3. Step 3: Cross multiply
    3,939.67x = 5,910.21 × 1,307.34
  4. Step 4: Simplify right side
    3,939.67x = 7,726,627.66
  5. Step 5: Solve for x
    x = 7,726,627.66/3,939.67
  6. Step 6: Final answer
    x = 1,961.24

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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.