Home / 2,118.05-3,177.08-1,251.75

Finding the Fourth Proportional to 2,118.05, 3,177.08 and 1,251.75

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Solution

The fourth proportional to 2,118.05, 3,177.08 and 1,251.75 is: 1,877.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.05 : 3,177.08 = 1,251.75 : x
  2. Step 2: Convert to fraction form
    2,118.05/3,177.08 = 1,251.75/x
  3. Step 3: Cross multiply
    2,118.05x = 3,177.08 × 1,251.75
  4. Step 4: Simplify right side
    2,118.05x = 3,976,903.63
  5. Step 5: Solve for x
    x = 3,976,903.63/2,118.05
  6. Step 6: Final answer
    x = 1,877.63

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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.