Home / 2,679.29-4,018.22-1,218.12

Finding the Fourth Proportional to 2,679.29, 4,018.22 and 1,218.12

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Solution

The fourth proportional to 2,679.29, 4,018.22 and 1,218.12 is: 1,826.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.29 : 4,018.22 = 1,218.12 : x
  2. Step 2: Convert to fraction form
    2,679.29/4,018.22 = 1,218.12/x
  3. Step 3: Cross multiply
    2,679.29x = 4,018.22 × 1,218.12
  4. Step 4: Simplify right side
    2,679.29x = 4,894,674.15
  5. Step 5: Solve for x
    x = 4,894,674.15/2,679.29
  6. Step 6: Final answer
    x = 1,826.85

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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.