Home / 6,640.36-9,146.82-5,065.72

Finding the Fourth Proportional to 6,640.36, 9,146.82 and 5,065.72

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Solution

The fourth proportional to 6,640.36, 9,146.82 and 5,065.72 is: 6,977.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.36 : 9,146.82 = 5,065.72 : x
  2. Step 2: Convert to fraction form
    6,640.36/9,146.82 = 5,065.72/x
  3. Step 3: Cross multiply
    6,640.36x = 9,146.82 × 5,065.72
  4. Step 4: Simplify right side
    6,640.36x = 46,335,229.01
  5. Step 5: Solve for x
    x = 46,335,229.01/6,640.36
  6. Step 6: Final answer
    x = 6,977.82

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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.