Home / 2,759.15-3,808.97-1,920.50

Finding the Fourth Proportional to 2,759.15, 3,808.97 and 1,920.50

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Solution

The fourth proportional to 2,759.15, 3,808.97 and 1,920.50 is: 2,651.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,759.15 : 3,808.97 = 1,920.50 : x
  2. Step 2: Convert to fraction form
    2,759.15/3,808.97 = 1,920.50/x
  3. Step 3: Cross multiply
    2,759.15x = 3,808.97 × 1,920.50
  4. Step 4: Simplify right side
    2,759.15x = 7,315,098.24
  5. Step 5: Solve for x
    x = 7,315,098.24/2,759.15
  6. Step 6: Final answer
    x = 2,651.22

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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.