Home / 2,290.76-3,161.21-1,296.02

Finding the Fourth Proportional to 2,290.76, 3,161.21 and 1,296.02

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Solution

The fourth proportional to 2,290.76, 3,161.21 and 1,296.02 is: 1,788.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.76 : 3,161.21 = 1,296.02 : x
  2. Step 2: Convert to fraction form
    2,290.76/3,161.21 = 1,296.02/x
  3. Step 3: Cross multiply
    2,290.76x = 3,161.21 × 1,296.02
  4. Step 4: Simplify right side
    2,290.76x = 4,096,984.90
  5. Step 5: Solve for x
    x = 4,096,984.90/2,290.76
  6. Step 6: Final answer
    x = 1,788.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.