Home / 1,940.79-2,678.64-1,144.07

Finding the Fourth Proportional to 1,940.79, 2,678.64 and 1,144.07

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Solution

The fourth proportional to 1,940.79, 2,678.64 and 1,144.07 is: 1,579.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.79 : 2,678.64 = 1,144.07 : x
  2. Step 2: Convert to fraction form
    1,940.79/2,678.64 = 1,144.07/x
  3. Step 3: Cross multiply
    1,940.79x = 2,678.64 × 1,144.07
  4. Step 4: Simplify right side
    1,940.79x = 3,064,561.21
  5. Step 5: Solve for x
    x = 3,064,561.21/1,940.79
  6. Step 6: Final answer
    x = 1,579.02

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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.