Home / 2,137.18-3,207.77-1,317.06

Finding the Fourth Proportional to 2,137.18, 3,207.77 and 1,317.06

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Solution

The fourth proportional to 2,137.18, 3,207.77 and 1,317.06 is: 1,976.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.18 : 3,207.77 = 1,317.06 : x
  2. Step 2: Convert to fraction form
    2,137.18/3,207.77 = 1,317.06/x
  3. Step 3: Cross multiply
    2,137.18x = 3,207.77 × 1,317.06
  4. Step 4: Simplify right side
    2,137.18x = 4,224,825.56
  5. Step 5: Solve for x
    x = 4,224,825.56/2,137.18
  6. Step 6: Final answer
    x = 1,976.82

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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.