Home / 2,690.57-4,036.62-1,129.76

Finding the Fourth Proportional to 2,690.57, 4,036.62 and 1,129.76

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Solution

The fourth proportional to 2,690.57, 4,036.62 and 1,129.76 is: 1,694.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.57 : 4,036.62 = 1,129.76 : x
  2. Step 2: Convert to fraction form
    2,690.57/4,036.62 = 1,129.76/x
  3. Step 3: Cross multiply
    2,690.57x = 4,036.62 × 1,129.76
  4. Step 4: Simplify right side
    2,690.57x = 4,560,427.99
  5. Step 5: Solve for x
    x = 4,560,427.99/2,690.57
  6. Step 6: Final answer
    x = 1,694.97

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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.