Home / 3,813.36-5,260.68-2,972.64

Finding the Fourth Proportional to 3,813.36, 5,260.68 and 2,972.64

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Solution

The fourth proportional to 3,813.36, 5,260.68 and 2,972.64 is: 4,100.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.36 : 5,260.68 = 2,972.64 : x
  2. Step 2: Convert to fraction form
    3,813.36/5,260.68 = 2,972.64/x
  3. Step 3: Cross multiply
    3,813.36x = 5,260.68 × 2,972.64
  4. Step 4: Simplify right side
    3,813.36x = 15,638,107.80
  5. Step 5: Solve for x
    x = 15,638,107.80/3,813.36
  6. Step 6: Final answer
    x = 4,100.87

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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.