Home / 3,650.40-5,474.28-1,309.80

Finding the Fourth Proportional to 3,650.40, 5,474.28 and 1,309.80

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Solution

The fourth proportional to 3,650.40, 5,474.28 and 1,309.80 is: 1,964.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,650.40 : 5,474.28 = 1,309.80 : x
  2. Step 2: Convert to fraction form
    3,650.40/5,474.28 = 1,309.80/x
  3. Step 3: Cross multiply
    3,650.40x = 5,474.28 × 1,309.80
  4. Step 4: Simplify right side
    3,650.40x = 7,170,211.94
  5. Step 5: Solve for x
    x = 7,170,211.94/3,650.40
  6. Step 6: Final answer
    x = 1,964.23

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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.