Home / 2,160.66-3,238.26-1,985.70

Finding the Fourth Proportional to 2,160.66, 3,238.26 and 1,985.70

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Solution

The fourth proportional to 2,160.66, 3,238.26 and 1,985.70 is: 2,976.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.66 : 3,238.26 = 1,985.70 : x
  2. Step 2: Convert to fraction form
    2,160.66/3,238.26 = 1,985.70/x
  3. Step 3: Cross multiply
    2,160.66x = 3,238.26 × 1,985.70
  4. Step 4: Simplify right side
    2,160.66x = 6,430,212.88
  5. Step 5: Solve for x
    x = 6,430,212.88/2,160.66
  6. Step 6: Final answer
    x = 2,976.04

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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.