Home / 5,640.38-7,785.16-3,755.12

Finding the Fourth Proportional to 5,640.38, 7,785.16 and 3,755.12

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Solution

The fourth proportional to 5,640.38, 7,785.16 and 3,755.12 is: 5,183.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.38 : 7,785.16 = 3,755.12 : x
  2. Step 2: Convert to fraction form
    5,640.38/7,785.16 = 3,755.12/x
  3. Step 3: Cross multiply
    5,640.38x = 7,785.16 × 3,755.12
  4. Step 4: Simplify right side
    5,640.38x = 29,234,210.02
  5. Step 5: Solve for x
    x = 29,234,210.02/5,640.38
  6. Step 6: Final answer
    x = 5,183.02

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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.