Home / 2,639.24-3,643.32-1,896.92

Finding the Fourth Proportional to 2,639.24, 3,643.32 and 1,896.92

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Solution

The fourth proportional to 2,639.24, 3,643.32 and 1,896.92 is: 2,618.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.24 : 3,643.32 = 1,896.92 : x
  2. Step 2: Convert to fraction form
    2,639.24/3,643.32 = 1,896.92/x
  3. Step 3: Cross multiply
    2,639.24x = 3,643.32 × 1,896.92
  4. Step 4: Simplify right side
    2,639.24x = 6,911,086.57
  5. Step 5: Solve for x
    x = 6,911,086.57/2,639.24
  6. Step 6: Final answer
    x = 2,618.59

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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.