Home / 2,790.35-4,187.14-1,251.35

Finding the Fourth Proportional to 2,790.35, 4,187.14 and 1,251.35

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Solution

The fourth proportional to 2,790.35, 4,187.14 and 1,251.35 is: 1,877.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.35 : 4,187.14 = 1,251.35 : x
  2. Step 2: Convert to fraction form
    2,790.35/4,187.14 = 1,251.35/x
  3. Step 3: Cross multiply
    2,790.35x = 4,187.14 × 1,251.35
  4. Step 4: Simplify right side
    2,790.35x = 5,239,556.70
  5. Step 5: Solve for x
    x = 5,239,556.70/2,790.35
  6. Step 6: Final answer
    x = 1,877.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.