Home / 2,174.17-2,999.36-1,289.47

Finding the Fourth Proportional to 2,174.17, 2,999.36 and 1,289.47

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Solution

The fourth proportional to 2,174.17, 2,999.36 and 1,289.47 is: 1,778.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,174.17 : 2,999.36 = 1,289.47 : x
  2. Step 2: Convert to fraction form
    2,174.17/2,999.36 = 1,289.47/x
  3. Step 3: Cross multiply
    2,174.17x = 2,999.36 × 1,289.47
  4. Step 4: Simplify right side
    2,174.17x = 3,867,563.30
  5. Step 5: Solve for x
    x = 3,867,563.30/2,174.17
  6. Step 6: Final answer
    x = 1,778.87

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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.