Home / 1,939.81-2,913.45-1,662.79

Finding the Fourth Proportional to 1,939.81, 2,913.45 and 1,662.79

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Solution

The fourth proportional to 1,939.81, 2,913.45 and 1,662.79 is: 2,497.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.81 : 2,913.45 = 1,662.79 : x
  2. Step 2: Convert to fraction form
    1,939.81/2,913.45 = 1,662.79/x
  3. Step 3: Cross multiply
    1,939.81x = 2,913.45 × 1,662.79
  4. Step 4: Simplify right side
    1,939.81x = 4,844,447.21
  5. Step 5: Solve for x
    x = 4,844,447.21/1,939.81
  6. Step 6: Final answer
    x = 2,497.38

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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.