Home / 1,940.42-2,678.01-1,154.90

Finding the Fourth Proportional to 1,940.42, 2,678.01 and 1,154.90

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Solution

The fourth proportional to 1,940.42, 2,678.01 and 1,154.90 is: 1,593.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.42 : 2,678.01 = 1,154.90 : x
  2. Step 2: Convert to fraction form
    1,940.42/2,678.01 = 1,154.90/x
  3. Step 3: Cross multiply
    1,940.42x = 2,678.01 × 1,154.90
  4. Step 4: Simplify right side
    1,940.42x = 3,092,833.75
  5. Step 5: Solve for x
    x = 3,092,833.75/1,940.42
  6. Step 6: Final answer
    x = 1,593.90

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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.