Home / 2,812.52-3,880.71-2,067.12

Finding the Fourth Proportional to 2,812.52, 3,880.71 and 2,067.12

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Solution

The fourth proportional to 2,812.52, 3,880.71 and 2,067.12 is: 2,852.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.52 : 3,880.71 = 2,067.12 : x
  2. Step 2: Convert to fraction form
    2,812.52/3,880.71 = 2,067.12/x
  3. Step 3: Cross multiply
    2,812.52x = 3,880.71 × 2,067.12
  4. Step 4: Simplify right side
    2,812.52x = 8,021,893.26
  5. Step 5: Solve for x
    x = 8,021,893.26/2,812.52
  6. Step 6: Final answer
    x = 2,852.21

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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.