Home / 2,169.90-2,992.91-1,285.02

Finding the Fourth Proportional to 2,169.90, 2,992.91 and 1,285.02

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Solution

The fourth proportional to 2,169.90, 2,992.91 and 1,285.02 is: 1,772.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.90 : 2,992.91 = 1,285.02 : x
  2. Step 2: Convert to fraction form
    2,169.90/2,992.91 = 1,285.02/x
  3. Step 3: Cross multiply
    2,169.90x = 2,992.91 × 1,285.02
  4. Step 4: Simplify right side
    2,169.90x = 3,845,942.78
  5. Step 5: Solve for x
    x = 3,845,942.78/2,169.90
  6. Step 6: Final answer
    x = 1,772.41

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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.