Home / 2,649.27-3,660.69-1,905.69

Finding the Fourth Proportional to 2,649.27, 3,660.69 and 1,905.69

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Solution

The fourth proportional to 2,649.27, 3,660.69 and 1,905.69 is: 2,633.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,649.27 : 3,660.69 = 1,905.69 : x
  2. Step 2: Convert to fraction form
    2,649.27/3,660.69 = 1,905.69/x
  3. Step 3: Cross multiply
    2,649.27x = 3,660.69 × 1,905.69
  4. Step 4: Simplify right side
    2,649.27x = 6,976,140.33
  5. Step 5: Solve for x
    x = 6,976,140.33/2,649.27
  6. Step 6: Final answer
    x = 2,633.23

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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.