Home / 4,090.78-5,643.45-3,144.88

Finding the Fourth Proportional to 4,090.78, 5,643.45 and 3,144.88

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Solution

The fourth proportional to 4,090.78, 5,643.45 and 3,144.88 is: 4,338.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090.78 : 5,643.45 = 3,144.88 : x
  2. Step 2: Convert to fraction form
    4,090.78/5,643.45 = 3,144.88/x
  3. Step 3: Cross multiply
    4,090.78x = 5,643.45 × 3,144.88
  4. Step 4: Simplify right side
    4,090.78x = 17,747,973.04
  5. Step 5: Solve for x
    x = 17,747,973.04/4,090.78
  6. Step 6: Final answer
    x = 4,338.53

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1.5x scale

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.