Home / 2,148.06-3,220.34-1,422.03

Finding the Fourth Proportional to 2,148.06, 3,220.34 and 1,422.03

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Solution

The fourth proportional to 2,148.06, 3,220.34 and 1,422.03 is: 2,131.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.06 : 3,220.34 = 1,422.03 : x
  2. Step 2: Convert to fraction form
    2,148.06/3,220.34 = 1,422.03/x
  3. Step 3: Cross multiply
    2,148.06x = 3,220.34 × 1,422.03
  4. Step 4: Simplify right side
    2,148.06x = 4,579,412.98
  5. Step 5: Solve for x
    x = 4,579,412.98/2,148.06
  6. Step 6: Final answer
    x = 2,131.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.