Home / 6,928.77-10,391.90-1,997.20

Finding the Fourth Proportional to 6,928.77, 10,391.90 and 1,997.20

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Solution

The fourth proportional to 6,928.77, 10,391.90 and 1,997.20 is: 2,995.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,928.77 : 10,391.90 = 1,997.20 : x
  2. Step 2: Convert to fraction form
    6,928.77/10,391.90 = 1,997.20/x
  3. Step 3: Cross multiply
    6,928.77x = 10,391.90 × 1,997.20
  4. Step 4: Simplify right side
    6,928.77x = 20,754,650.72
  5. Step 5: Solve for x
    x = 20,754,650.72/6,928.77
  6. Step 6: Final answer
    x = 2,995.43

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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.