Home / 1,939.99-2,678.52-1,816.06

Finding the Fourth Proportional to 1,939.99, 2,678.52 and 1,816.06

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Solution

The fourth proportional to 1,939.99, 2,678.52 and 1,816.06 is: 2,507.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.99 : 2,678.52 = 1,816.06 : x
  2. Step 2: Convert to fraction form
    1,939.99/2,678.52 = 1,816.06/x
  3. Step 3: Cross multiply
    1,939.99x = 2,678.52 × 1,816.06
  4. Step 4: Simplify right side
    1,939.99x = 4,864,330.56
  5. Step 5: Solve for x
    x = 4,864,330.56/1,939.99
  6. Step 6: Final answer
    x = 2,507.41

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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.