Home / 1,895.57-2,617.19-1,187.72

Finding the Fourth Proportional to 1,895.57, 2,617.19 and 1,187.72

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Solution

The fourth proportional to 1,895.57, 2,617.19 and 1,187.72 is: 1,639.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,895.57 : 2,617.19 = 1,187.72 : x
  2. Step 2: Convert to fraction form
    1,895.57/2,617.19 = 1,187.72/x
  3. Step 3: Cross multiply
    1,895.57x = 2,617.19 × 1,187.72
  4. Step 4: Simplify right side
    1,895.57x = 3,108,469.88
  5. Step 5: Solve for x
    x = 3,108,469.88/1,895.57
  6. Step 6: Final answer
    x = 1,639.86

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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.