Home / 2,643.29-3,640.31-2,197.15

Finding the Fourth Proportional to 2,643.29, 3,640.31 and 2,197.15

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Solution

The fourth proportional to 2,643.29, 3,640.31 and 2,197.15 is: 3,025.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.29 : 3,640.31 = 2,197.15 : x
  2. Step 2: Convert to fraction form
    2,643.29/3,640.31 = 2,197.15/x
  3. Step 3: Cross multiply
    2,643.29x = 3,640.31 × 2,197.15
  4. Step 4: Simplify right side
    2,643.29x = 7,998,277.93
  5. Step 5: Solve for x
    x = 7,998,277.93/2,643.29
  6. Step 6: Final answer
    x = 3,025.88

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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.