Home / 3,119.41-4,304.79-1,722.16

Finding the Fourth Proportional to 3,119.41, 4,304.79 and 1,722.16

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Solution

The fourth proportional to 3,119.41, 4,304.79 and 1,722.16 is: 2,376.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.41 : 4,304.79 = 1,722.16 : x
  2. Step 2: Convert to fraction form
    3,119.41/4,304.79 = 1,722.16/x
  3. Step 3: Cross multiply
    3,119.41x = 4,304.79 × 1,722.16
  4. Step 4: Simplify right side
    3,119.41x = 7,413,537.15
  5. Step 5: Solve for x
    x = 7,413,537.15/3,119.41
  6. Step 6: Final answer
    x = 2,376.58

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1.5x scale

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.