Home / 2,157.72-2,976.66-1,273.20

Finding the Fourth Proportional to 2,157.72, 2,976.66 and 1,273.20

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Solution

The fourth proportional to 2,157.72, 2,976.66 and 1,273.20 is: 1,756.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.72 : 2,976.66 = 1,273.20 : x
  2. Step 2: Convert to fraction form
    2,157.72/2,976.66 = 1,273.20/x
  3. Step 3: Cross multiply
    2,157.72x = 2,976.66 × 1,273.20
  4. Step 4: Simplify right side
    2,157.72x = 3,789,883.51
  5. Step 5: Solve for x
    x = 3,789,883.51/2,157.72
  6. Step 6: Final answer
    x = 1,756.43

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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.