Home / 3,119.56-4,304.64-1,722.31

Finding the Fourth Proportional to 3,119.56, 4,304.64 and 1,722.31

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Solution

The fourth proportional to 3,119.56, 4,304.64 and 1,722.31 is: 2,376.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.56 : 4,304.64 = 1,722.31 : x
  2. Step 2: Convert to fraction form
    3,119.56/4,304.64 = 1,722.31/x
  3. Step 3: Cross multiply
    3,119.56x = 4,304.64 × 1,722.31
  4. Step 4: Simplify right side
    3,119.56x = 7,413,924.52
  5. Step 5: Solve for x
    x = 7,413,924.52/3,119.56
  6. Step 6: Final answer
    x = 2,376.59

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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.