Home / 5,642.31-7,786.38-3,090.09

Finding the Fourth Proportional to 5,642.31, 7,786.38 and 3,090.09

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Solution

The fourth proportional to 5,642.31, 7,786.38 and 3,090.09 is: 4,264.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,642.31 : 7,786.38 = 3,090.09 : x
  2. Step 2: Convert to fraction form
    5,642.31/7,786.38 = 3,090.09/x
  3. Step 3: Cross multiply
    5,642.31x = 7,786.38 × 3,090.09
  4. Step 4: Simplify right side
    5,642.31x = 24,060,614.97
  5. Step 5: Solve for x
    x = 24,060,614.97/5,642.31
  6. Step 6: Final answer
    x = 4,264.32

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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.