Home / 3,129.55-4,694.42-1,485.25

Finding the Fourth Proportional to 3,129.55, 4,694.42 and 1,485.25

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Solution

The fourth proportional to 3,129.55, 4,694.42 and 1,485.25 is: 2,227.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.55 : 4,694.42 = 1,485.25 : x
  2. Step 2: Convert to fraction form
    3,129.55/4,694.42 = 1,485.25/x
  3. Step 3: Cross multiply
    3,129.55x = 4,694.42 × 1,485.25
  4. Step 4: Simplify right side
    3,129.55x = 6,972,379.28
  5. Step 5: Solve for x
    x = 6,972,379.28/3,129.55
  6. Step 6: Final answer
    x = 2,227.92

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1.5x scale

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.