Home / 2,163.30-2,987.40-1,724.43

Finding the Fourth Proportional to 2,163.30, 2,987.40 and 1,724.43

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Solution

The fourth proportional to 2,163.30, 2,987.40 and 1,724.43 is: 2,381.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.30 : 2,987.40 = 1,724.43 : x
  2. Step 2: Convert to fraction form
    2,163.30/2,987.40 = 1,724.43/x
  3. Step 3: Cross multiply
    2,163.30x = 2,987.40 × 1,724.43
  4. Step 4: Simplify right side
    2,163.30x = 5,151,562.18
  5. Step 5: Solve for x
    x = 5,151,562.18/2,163.30
  6. Step 6: Final answer
    x = 2,381.34

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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.