Home / 2,690.22-4,033.86-1,812.72

Finding the Fourth Proportional to 2,690.22, 4,033.86 and 1,812.72

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Solution

The fourth proportional to 2,690.22, 4,033.86 and 1,812.72 is: 2,718.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.22 : 4,033.86 = 1,812.72 : x
  2. Step 2: Convert to fraction form
    2,690.22/4,033.86 = 1,812.72/x
  3. Step 3: Cross multiply
    2,690.22x = 4,033.86 × 1,812.72
  4. Step 4: Simplify right side
    2,690.22x = 7,312,258.70
  5. Step 5: Solve for x
    x = 7,312,258.70/2,690.22
  6. Step 6: Final answer
    x = 2,718.09

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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.