Home / 3,960.40-5,934.20-3,307.60

Finding the Fourth Proportional to 3,960.40, 5,934.20 and 3,307.60

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Solution

The fourth proportional to 3,960.40, 5,934.20 and 3,307.60 is: 4,956.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.40 : 5,934.20 = 3,307.60 : x
  2. Step 2: Convert to fraction form
    3,960.40/5,934.20 = 3,307.60/x
  3. Step 3: Cross multiply
    3,960.40x = 5,934.20 × 3,307.60
  4. Step 4: Simplify right side
    3,960.40x = 19,627,959.92
  5. Step 5: Solve for x
    x = 19,627,959.92/3,960.40
  6. Step 6: Final answer
    x = 4,956.05

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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.