Home / 4,090.78-5,643.48-2,764

Finding the Fourth Proportional to 4,090.78, 5,643.48 and 2,764

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Solution

The fourth proportional to 4,090.78, 5,643.48 and 2,764 is: 3,813.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090.78 : 5,643.48 = 2,764 : x
  2. Step 2: Convert to fraction form
    4,090.78/5,643.48 = 2,764/x
  3. Step 3: Cross multiply
    4,090.78x = 5,643.48 × 2,764
  4. Step 4: Simplify right side
    4,090.78x = 15,598,578.72
  5. Step 5: Solve for x
    x = 15,598,578.72/4,090.78
  6. Step 6: Final answer
    x = 3,813.11

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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.