Home / 2,816.83-3,887.68-1,872.64

Finding the Fourth Proportional to 2,816.83, 3,887.68 and 1,872.64

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Solution

The fourth proportional to 2,816.83, 3,887.68 and 1,872.64 is: 2,584.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.83 : 3,887.68 = 1,872.64 : x
  2. Step 2: Convert to fraction form
    2,816.83/3,887.68 = 1,872.64/x
  3. Step 3: Cross multiply
    2,816.83x = 3,887.68 × 1,872.64
  4. Step 4: Simplify right side
    2,816.83x = 7,280,205.64
  5. Step 5: Solve for x
    x = 7,280,205.64/2,816.83
  6. Step 6: Final answer
    x = 2,584.54

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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.