Home / 6,628.91-9,147.66-3,644.72

Finding the Fourth Proportional to 6,628.91, 9,147.66 and 3,644.72

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Solution

The fourth proportional to 6,628.91, 9,147.66 and 3,644.72 is: 5,029.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,628.91 : 9,147.66 = 3,644.72 : x
  2. Step 2: Convert to fraction form
    6,628.91/9,147.66 = 3,644.72/x
  3. Step 3: Cross multiply
    6,628.91x = 9,147.66 × 3,644.72
  4. Step 4: Simplify right side
    6,628.91x = 33,340,641.13
  5. Step 5: Solve for x
    x = 33,340,641.13/6,628.91
  6. Step 6: Final answer
    x = 5,029.58

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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.