Home / 3,119-4,304.28-1,721.72

Finding the Fourth Proportional to 3,119, 4,304.28 and 1,721.72

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Solution

The fourth proportional to 3,119, 4,304.28 and 1,721.72 is: 2,376.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119 : 4,304.28 = 1,721.72 : x
  2. Step 2: Convert to fraction form
    3,119/4,304.28 = 1,721.72/x
  3. Step 3: Cross multiply
    3,119x = 4,304.28 × 1,721.72
  4. Step 4: Simplify right side
    3,119x = 7,410,764.96
  5. Step 5: Solve for x
    x = 7,410,764.96/3,119
  6. Step 6: Final answer
    x = 2,376.01

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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.