Home / 1,861.22-2,791.16-1,339.66

Finding the Fourth Proportional to 1,861.22, 2,791.16 and 1,339.66

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Solution

The fourth proportional to 1,861.22, 2,791.16 and 1,339.66 is: 2,009.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.22 : 2,791.16 = 1,339.66 : x
  2. Step 2: Convert to fraction form
    1,861.22/2,791.16 = 1,339.66/x
  3. Step 3: Cross multiply
    1,861.22x = 2,791.16 × 1,339.66
  4. Step 4: Simplify right side
    1,861.22x = 3,739,205.41
  5. Step 5: Solve for x
    x = 3,739,205.41/1,861.22
  6. Step 6: Final answer
    x = 2,009.01

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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.