Home / 1,790.40-2,682.62-1,267.82

Finding the Fourth Proportional to 1,790.40, 2,682.62 and 1,267.82

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Solution

The fourth proportional to 1,790.40, 2,682.62 and 1,267.82 is: 1,899.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.40 : 2,682.62 = 1,267.82 : x
  2. Step 2: Convert to fraction form
    1,790.40/2,682.62 = 1,267.82/x
  3. Step 3: Cross multiply
    1,790.40x = 2,682.62 × 1,267.82
  4. Step 4: Simplify right side
    1,790.40x = 3,401,074.35
  5. Step 5: Solve for x
    x = 3,401,074.35/1,790.40
  6. Step 6: Final answer
    x = 1,899.61

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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.