Home / 7,145.20-10,718.96-2,213.68

Finding the Fourth Proportional to 7,145.20, 10,718.96 and 2,213.68

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Solution

The fourth proportional to 7,145.20, 10,718.96 and 2,213.68 is: 3,320.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.20 : 10,718.96 = 2,213.68 : x
  2. Step 2: Convert to fraction form
    7,145.20/10,718.96 = 2,213.68/x
  3. Step 3: Cross multiply
    7,145.20x = 10,718.96 × 2,213.68
  4. Step 4: Simplify right side
    7,145.20x = 23,728,347.37
  5. Step 5: Solve for x
    x = 23,728,347.37/7,145.20
  6. Step 6: Final answer
    x = 3,320.88

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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.