Home / 2,838.15-3,920.18-2,182.95

Finding the Fourth Proportional to 2,838.15, 3,920.18 and 2,182.95

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Solution

The fourth proportional to 2,838.15, 3,920.18 and 2,182.95 is: 3,015.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.15 : 3,920.18 = 2,182.95 : x
  2. Step 2: Convert to fraction form
    2,838.15/3,920.18 = 2,182.95/x
  3. Step 3: Cross multiply
    2,838.15x = 3,920.18 × 2,182.95
  4. Step 4: Simplify right side
    2,838.15x = 8,557,546.02
  5. Step 5: Solve for x
    x = 8,557,546.02/2,838.15
  6. Step 6: Final answer
    x = 3,015.18

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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.