Home / 2,689.22-4,025.19-1,818.74

Finding the Fourth Proportional to 2,689.22, 4,025.19 and 1,818.74

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Solution

The fourth proportional to 2,689.22, 4,025.19 and 1,818.74 is: 2,722.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.22 : 4,025.19 = 1,818.74 : x
  2. Step 2: Convert to fraction form
    2,689.22/4,025.19 = 1,818.74/x
  3. Step 3: Cross multiply
    2,689.22x = 4,025.19 × 1,818.74
  4. Step 4: Simplify right side
    2,689.22x = 7,320,774.06
  5. Step 5: Solve for x
    x = 7,320,774.06/2,689.22
  6. Step 6: Final answer
    x = 2,722.27

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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.