Home / 3,129.39-4,694.40-1,485.54

Finding the Fourth Proportional to 3,129.39, 4,694.40 and 1,485.54

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Solution

The fourth proportional to 3,129.39, 4,694.40 and 1,485.54 is: 2,228.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.39 : 4,694.40 = 1,485.54 : x
  2. Step 2: Convert to fraction form
    3,129.39/4,694.40 = 1,485.54/x
  3. Step 3: Cross multiply
    3,129.39x = 4,694.40 × 1,485.54
  4. Step 4: Simplify right side
    3,129.39x = 6,973,718.98
  5. Step 5: Solve for x
    x = 6,973,718.98/3,129.39
  6. Step 6: Final answer
    x = 2,228.46

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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.