Home / 6,621.89-9,138.02-3,789.38

Finding the Fourth Proportional to 6,621.89, 9,138.02 and 3,789.38

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Solution

The fourth proportional to 6,621.89, 9,138.02 and 3,789.38 is: 5,229.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.89 : 9,138.02 = 3,789.38 : x
  2. Step 2: Convert to fraction form
    6,621.89/9,138.02 = 3,789.38/x
  3. Step 3: Cross multiply
    6,621.89x = 9,138.02 × 3,789.38
  4. Step 4: Simplify right side
    6,621.89x = 34,627,434.13
  5. Step 5: Solve for x
    x = 34,627,434.13/6,621.89
  6. Step 6: Final answer
    x = 5,229.24

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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.