Home / 4,785.64-7,175.92-1,861

Finding the Fourth Proportional to 4,785.64, 7,175.92 and 1,861

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Solution

The fourth proportional to 4,785.64, 7,175.92 and 1,861 is: 2,790.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,785.64 : 7,175.92 = 1,861 : x
  2. Step 2: Convert to fraction form
    4,785.64/7,175.92 = 1,861/x
  3. Step 3: Cross multiply
    4,785.64x = 7,175.92 × 1,861
  4. Step 4: Simplify right side
    4,785.64x = 13,354,387.12
  5. Step 5: Solve for x
    x = 13,354,387.12/4,785.64
  6. Step 6: Final answer
    x = 2,790.51

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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.