Home / 3,940.11-5,910.48-1,307.52

Finding the Fourth Proportional to 3,940.11, 5,910.48 and 1,307.52

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Solution

The fourth proportional to 3,940.11, 5,910.48 and 1,307.52 is: 1,961.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.11 : 5,910.48 = 1,307.52 : x
  2. Step 2: Convert to fraction form
    3,940.11/5,910.48 = 1,307.52/x
  3. Step 3: Cross multiply
    3,940.11x = 5,910.48 × 1,307.52
  4. Step 4: Simplify right side
    3,940.11x = 7,728,070.81
  5. Step 5: Solve for x
    x = 7,728,070.81/3,940.11
  6. Step 6: Final answer
    x = 1,961.38

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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.