Home / 7,321.40-10,103.62-3,964.29

Finding the Fourth Proportional to 7,321.40, 10,103.62 and 3,964.29

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Solution

The fourth proportional to 7,321.40, 10,103.62 and 3,964.29 is: 5,470.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321.40 : 10,103.62 = 3,964.29 : x
  2. Step 2: Convert to fraction form
    7,321.40/10,103.62 = 3,964.29/x
  3. Step 3: Cross multiply
    7,321.40x = 10,103.62 × 3,964.29
  4. Step 4: Simplify right side
    7,321.40x = 40,053,669.82
  5. Step 5: Solve for x
    x = 40,053,669.82/7,321.40
  6. Step 6: Final answer
    x = 5,470.76

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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.