Home / 2,822.15-3,894.81-1,643.33

Finding the Fourth Proportional to 2,822.15, 3,894.81 and 1,643.33

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Solution

The fourth proportional to 2,822.15, 3,894.81 and 1,643.33 is: 2,267.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.15 : 3,894.81 = 1,643.33 : x
  2. Step 2: Convert to fraction form
    2,822.15/3,894.81 = 1,643.33/x
  3. Step 3: Cross multiply
    2,822.15x = 3,894.81 × 1,643.33
  4. Step 4: Simplify right side
    2,822.15x = 6,400,458.12
  5. Step 5: Solve for x
    x = 6,400,458.12/2,822.15
  6. Step 6: Final answer
    x = 2,267.94

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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.