Home / 2,173.07-2,999.25-1,289.36

Finding the Fourth Proportional to 2,173.07, 2,999.25 and 1,289.36

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Solution

The fourth proportional to 2,173.07, 2,999.25 and 1,289.36 is: 1,779.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.07 : 2,999.25 = 1,289.36 : x
  2. Step 2: Convert to fraction form
    2,173.07/2,999.25 = 1,289.36/x
  3. Step 3: Cross multiply
    2,173.07x = 2,999.25 × 1,289.36
  4. Step 4: Simplify right side
    2,173.07x = 3,867,120.48
  5. Step 5: Solve for x
    x = 3,867,120.48/2,173.07
  6. Step 6: Final answer
    x = 1,779.56

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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.