Home / 2,290.87-3,161.29-1,296.29

Finding the Fourth Proportional to 2,290.87, 3,161.29 and 1,296.29

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Solution

The fourth proportional to 2,290.87, 3,161.29 and 1,296.29 is: 1,788.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.87 : 3,161.29 = 1,296.29 : x
  2. Step 2: Convert to fraction form
    2,290.87/3,161.29 = 1,296.29/x
  3. Step 3: Cross multiply
    2,290.87x = 3,161.29 × 1,296.29
  4. Step 4: Simplify right side
    2,290.87x = 4,097,948.61
  5. Step 5: Solve for x
    x = 4,097,948.61/2,290.87
  6. Step 6: Final answer
    x = 1,788.82

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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.