Home / 2,742.78-3,785.06-1,563.91

Finding the Fourth Proportional to 2,742.78, 3,785.06 and 1,563.91

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Solution

The fourth proportional to 2,742.78, 3,785.06 and 1,563.91 is: 2,158.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.78 : 3,785.06 = 1,563.91 : x
  2. Step 2: Convert to fraction form
    2,742.78/3,785.06 = 1,563.91/x
  3. Step 3: Cross multiply
    2,742.78x = 3,785.06 × 1,563.91
  4. Step 4: Simplify right side
    2,742.78x = 5,919,493.18
  5. Step 5: Solve for x
    x = 5,919,493.18/2,742.78
  6. Step 6: Final answer
    x = 2,158.21

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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.