Home / 6,628.88-9,149.12-3,977.84

Finding the Fourth Proportional to 6,628.88, 9,149.12 and 3,977.84

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Solution

The fourth proportional to 6,628.88, 9,149.12 and 3,977.84 is: 5,490.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,628.88 : 9,149.12 = 3,977.84 : x
  2. Step 2: Convert to fraction form
    6,628.88/9,149.12 = 3,977.84/x
  3. Step 3: Cross multiply
    6,628.88x = 9,149.12 × 3,977.84
  4. Step 4: Simplify right side
    6,628.88x = 36,393,735.50
  5. Step 5: Solve for x
    x = 36,393,735.50/6,628.88
  6. Step 6: Final answer
    x = 5,490.18

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1.5x scale

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.