Home / 1,489.22-2,232.06-1,122.80

Finding the Fourth Proportional to 1,489.22, 2,232.06 and 1,122.80

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Solution

The fourth proportional to 1,489.22, 2,232.06 and 1,122.80 is: 1,682.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.22 : 2,232.06 = 1,122.80 : x
  2. Step 2: Convert to fraction form
    1,489.22/2,232.06 = 1,122.80/x
  3. Step 3: Cross multiply
    1,489.22x = 2,232.06 × 1,122.80
  4. Step 4: Simplify right side
    1,489.22x = 2,506,156.97
  5. Step 5: Solve for x
    x = 2,506,156.97/1,489.22
  6. Step 6: Final answer
    x = 1,682.87

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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.