Home / 2,690.83-4,030.57-1,231.21

Finding the Fourth Proportional to 2,690.83, 4,030.57 and 1,231.21

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Solution

The fourth proportional to 2,690.83, 4,030.57 and 1,231.21 is: 1,844.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.83 : 4,030.57 = 1,231.21 : x
  2. Step 2: Convert to fraction form
    2,690.83/4,030.57 = 1,231.21/x
  3. Step 3: Cross multiply
    2,690.83x = 4,030.57 × 1,231.21
  4. Step 4: Simplify right side
    2,690.83x = 4,962,451.78
  5. Step 5: Solve for x
    x = 4,962,451.78/2,690.83
  6. Step 6: Final answer
    x = 1,844.21

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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.