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Finding the Fourth Proportional to 6,977, 9,628 and 3,790.16

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Solution

The fourth proportional to 6,977, 9,628 and 3,790.16 is: 5,230.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,977 : 9,628 = 3,790.16 : x
  2. Step 2: Convert to fraction form
    6,977/9,628 = 3,790.16/x
  3. Step 3: Cross multiply
    6,977x = 9,628 × 3,790.16
  4. Step 4: Simplify right side
    6,977x = 36,491,660.48
  5. Step 5: Solve for x
    x = 36,491,660.48/6,977
  6. Step 6: Final answer
    x = 5,230.28

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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.