Home / 2,939.45-4,405.17-1,621.23

Finding the Fourth Proportional to 2,939.45, 4,405.17 and 1,621.23

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Solution

The fourth proportional to 2,939.45, 4,405.17 and 1,621.23 is: 2,429.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.45 : 4,405.17 = 1,621.23 : x
  2. Step 2: Convert to fraction form
    2,939.45/4,405.17 = 1,621.23/x
  3. Step 3: Cross multiply
    2,939.45x = 4,405.17 × 1,621.23
  4. Step 4: Simplify right side
    2,939.45x = 7,141,793.76
  5. Step 5: Solve for x
    x = 7,141,793.76/2,939.45
  6. Step 6: Final answer
    x = 2,429.64

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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.