Home / 3,563.12-4,917-1,991.24

Finding the Fourth Proportional to 3,563.12, 4,917 and 1,991.24

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Solution

The fourth proportional to 3,563.12, 4,917 and 1,991.24 is: 2,747.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,563.12 : 4,917 = 1,991.24 : x
  2. Step 2: Convert to fraction form
    3,563.12/4,917 = 1,991.24/x
  3. Step 3: Cross multiply
    3,563.12x = 4,917 × 1,991.24
  4. Step 4: Simplify right side
    3,563.12x = 9,790,927.08
  5. Step 5: Solve for x
    x = 9,790,927.08/3,563.12
  6. Step 6: Final answer
    x = 2,747.85

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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.