Home / 5,389.30-8,071.05-3,191.38

Finding the Fourth Proportional to 5,389.30, 8,071.05 and 3,191.38

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Solution

The fourth proportional to 5,389.30, 8,071.05 and 3,191.38 is: 4,779.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.30 : 8,071.05 = 3,191.38 : x
  2. Step 2: Convert to fraction form
    5,389.30/8,071.05 = 3,191.38/x
  3. Step 3: Cross multiply
    5,389.30x = 8,071.05 × 3,191.38
  4. Step 4: Simplify right side
    5,389.30x = 25,757,787.55
  5. Step 5: Solve for x
    x = 25,757,787.55/5,389.30
  6. Step 6: Final answer
    x = 4,779.43

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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.