Home / 7,121.36-10,680.56-2,440.88

Finding the Fourth Proportional to 7,121.36, 10,680.56 and 2,440.88

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Solution

The fourth proportional to 7,121.36, 10,680.56 and 2,440.88 is: 3,660.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.36 : 10,680.56 = 2,440.88 : x
  2. Step 2: Convert to fraction form
    7,121.36/10,680.56 = 2,440.88/x
  3. Step 3: Cross multiply
    7,121.36x = 10,680.56 × 2,440.88
  4. Step 4: Simplify right side
    7,121.36x = 26,069,965.29
  5. Step 5: Solve for x
    x = 26,069,965.29/7,121.36
  6. Step 6: Final answer
    x = 3,660.81

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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.