Home / 5,390.31-8,086.29-1,926.75

Finding the Fourth Proportional to 5,390.31, 8,086.29 and 1,926.75

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Solution

The fourth proportional to 5,390.31, 8,086.29 and 1,926.75 is: 2,890.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.31 : 8,086.29 = 1,926.75 : x
  2. Step 2: Convert to fraction form
    5,390.31/8,086.29 = 1,926.75/x
  3. Step 3: Cross multiply
    5,390.31x = 8,086.29 × 1,926.75
  4. Step 4: Simplify right side
    5,390.31x = 15,580,259.26
  5. Step 5: Solve for x
    x = 15,580,259.26/5,390.31
  6. Step 6: Final answer
    x = 2,890.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.