Home / 3,785.10-5,677.92-1,319.61

Finding the Fourth Proportional to 3,785.10, 5,677.92 and 1,319.61

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Solution

The fourth proportional to 3,785.10, 5,677.92 and 1,319.61 is: 1,979.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.10 : 5,677.92 = 1,319.61 : x
  2. Step 2: Convert to fraction form
    3,785.10/5,677.92 = 1,319.61/x
  3. Step 3: Cross multiply
    3,785.10x = 5,677.92 × 1,319.61
  4. Step 4: Simplify right side
    3,785.10x = 7,492,640.01
  5. Step 5: Solve for x
    x = 7,492,640.01/3,785.10
  6. Step 6: Final answer
    x = 1,979.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.