Home / 3,926.34-5,418.47-2,158

Finding the Fourth Proportional to 3,926.34, 5,418.47 and 2,158

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Solution

The fourth proportional to 3,926.34, 5,418.47 and 2,158 is: 2,978.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.34 : 5,418.47 = 2,158 : x
  2. Step 2: Convert to fraction form
    3,926.34/5,418.47 = 2,158/x
  3. Step 3: Cross multiply
    3,926.34x = 5,418.47 × 2,158
  4. Step 4: Simplify right side
    3,926.34x = 11,693,058.26
  5. Step 5: Solve for x
    x = 11,693,058.26/3,926.34
  6. Step 6: Final answer
    x = 2,978.11

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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.