Home / 7,104.20-9,803.78-3,960.38

Finding the Fourth Proportional to 7,104.20, 9,803.78 and 3,960.38

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Solution

The fourth proportional to 7,104.20, 9,803.78 and 3,960.38 is: 5,465.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,104.20 : 9,803.78 = 3,960.38 : x
  2. Step 2: Convert to fraction form
    7,104.20/9,803.78 = 3,960.38/x
  3. Step 3: Cross multiply
    7,104.20x = 9,803.78 × 3,960.38
  4. Step 4: Simplify right side
    7,104.20x = 38,826,625.42
  5. Step 5: Solve for x
    x = 38,826,625.42/7,104.20
  6. Step 6: Final answer
    x = 5,465.31

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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.