Home / 2,515.59-3,786.71-1,790.19

Finding the Fourth Proportional to 2,515.59, 3,786.71 and 1,790.19

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Solution

The fourth proportional to 2,515.59, 3,786.71 and 1,790.19 is: 2,694.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.59 : 3,786.71 = 1,790.19 : x
  2. Step 2: Convert to fraction form
    2,515.59/3,786.71 = 1,790.19/x
  3. Step 3: Cross multiply
    2,515.59x = 3,786.71 × 1,790.19
  4. Step 4: Simplify right side
    2,515.59x = 6,778,921.42
  5. Step 5: Solve for x
    x = 6,778,921.42/2,515.59
  6. Step 6: Final answer
    x = 2,694.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.