Home / 1,722.44-2,359.10-1,621.42

Finding the Fourth Proportional to 1,722.44, 2,359.10 and 1,621.42

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Solution

The fourth proportional to 1,722.44, 2,359.10 and 1,621.42 is: 2,220.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.44 : 2,359.10 = 1,621.42 : x
  2. Step 2: Convert to fraction form
    1,722.44/2,359.10 = 1,621.42/x
  3. Step 3: Cross multiply
    1,722.44x = 2,359.10 × 1,621.42
  4. Step 4: Simplify right side
    1,722.44x = 3,825,080.96
  5. Step 5: Solve for x
    x = 3,825,080.96/1,722.44
  6. Step 6: Final answer
    x = 2,220.74

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.