Home / 2,015.28-2,780.73-1,229.58

Finding the Fourth Proportional to 2,015.28, 2,780.73 and 1,229.58

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Solution

The fourth proportional to 2,015.28, 2,780.73 and 1,229.58 is: 1,696.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.28 : 2,780.73 = 1,229.58 : x
  2. Step 2: Convert to fraction form
    2,015.28/2,780.73 = 1,229.58/x
  3. Step 3: Cross multiply
    2,015.28x = 2,780.73 × 1,229.58
  4. Step 4: Simplify right side
    2,015.28x = 3,419,129.99
  5. Step 5: Solve for x
    x = 3,419,129.99/2,015.28
  6. Step 6: Final answer
    x = 1,696.60

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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.