Home / 2,687.22-4,029.53-1,206.90

Finding the Fourth Proportional to 2,687.22, 4,029.53 and 1,206.90

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Solution

The fourth proportional to 2,687.22, 4,029.53 and 1,206.90 is: 1,809.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.22 : 4,029.53 = 1,206.90 : x
  2. Step 2: Convert to fraction form
    2,687.22/4,029.53 = 1,206.90/x
  3. Step 3: Cross multiply
    2,687.22x = 4,029.53 × 1,206.90
  4. Step 4: Simplify right side
    2,687.22x = 4,863,233.72
  5. Step 5: Solve for x
    x = 4,863,233.72/2,687.22
  6. Step 6: Final answer
    x = 1,809.76

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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.