Home / 1,679.33-2,519.88-1,220.89

Finding the Fourth Proportional to 1,679.33, 2,519.88 and 1,220.89

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Solution

The fourth proportional to 1,679.33, 2,519.88 and 1,220.89 is: 1,831.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.33 : 2,519.88 = 1,220.89 : x
  2. Step 2: Convert to fraction form
    1,679.33/2,519.88 = 1,220.89/x
  3. Step 3: Cross multiply
    1,679.33x = 2,519.88 × 1,220.89
  4. Step 4: Simplify right side
    1,679.33x = 3,076,507.17
  5. Step 5: Solve for x
    x = 3,076,507.17/1,679.33
  6. Step 6: Final answer
    x = 1,831.98

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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.