Home / 6,921.06-10,380.06-2,760.30

Finding the Fourth Proportional to 6,921.06, 10,380.06 and 2,760.30

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Solution

The fourth proportional to 6,921.06, 10,380.06 and 2,760.30 is: 4,139.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.06 : 10,380.06 = 2,760.30 : x
  2. Step 2: Convert to fraction form
    6,921.06/10,380.06 = 2,760.30/x
  3. Step 3: Cross multiply
    6,921.06x = 10,380.06 × 2,760.30
  4. Step 4: Simplify right side
    6,921.06x = 28,652,079.62
  5. Step 5: Solve for x
    x = 28,652,079.62/6,921.06
  6. Step 6: Final answer
    x = 4,139.84

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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.