Home / 2,173.47-2,998.92-1,289.56

Finding the Fourth Proportional to 2,173.47, 2,998.92 and 1,289.56

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Solution

The fourth proportional to 2,173.47, 2,998.92 and 1,289.56 is: 1,779.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.47 : 2,998.92 = 1,289.56 : x
  2. Step 2: Convert to fraction form
    2,173.47/2,998.92 = 1,289.56/x
  3. Step 3: Cross multiply
    2,173.47x = 2,998.92 × 1,289.56
  4. Step 4: Simplify right side
    2,173.47x = 3,867,272.28
  5. Step 5: Solve for x
    x = 3,867,272.28/2,173.47
  6. Step 6: Final answer
    x = 1,779.31

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1.5x scale

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.