Home / 3,118.89-4,304.05-1,721.63

Finding the Fourth Proportional to 3,118.89, 4,304.05 and 1,721.63

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Solution

The fourth proportional to 3,118.89, 4,304.05 and 1,721.63 is: 2,375.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.89 : 4,304.05 = 1,721.63 : x
  2. Step 2: Convert to fraction form
    3,118.89/4,304.05 = 1,721.63/x
  3. Step 3: Cross multiply
    3,118.89x = 4,304.05 × 1,721.63
  4. Step 4: Simplify right side
    3,118.89x = 7,409,960.08
  5. Step 5: Solve for x
    x = 7,409,960.08/3,118.89
  6. Step 6: Final answer
    x = 2,375.84

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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.