Home / 2,350.20-3,243.05-1,405.80

Finding the Fourth Proportional to 2,350.20, 3,243.05 and 1,405.80

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Solution

The fourth proportional to 2,350.20, 3,243.05 and 1,405.80 is: 1,939.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,350.20 : 3,243.05 = 1,405.80 : x
  2. Step 2: Convert to fraction form
    2,350.20/3,243.05 = 1,405.80/x
  3. Step 3: Cross multiply
    2,350.20x = 3,243.05 × 1,405.80
  4. Step 4: Simplify right side
    2,350.20x = 4,559,079.69
  5. Step 5: Solve for x
    x = 4,559,079.69/2,350.20
  6. Step 6: Final answer
    x = 1,939.87

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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.