Home / 5,108.72-7,678.37-4,236.96

Finding the Fourth Proportional to 5,108.72, 7,678.37 and 4,236.96

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Solution

The fourth proportional to 5,108.72, 7,678.37 and 4,236.96 is: 6,368.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.72 : 7,678.37 = 4,236.96 : x
  2. Step 2: Convert to fraction form
    5,108.72/7,678.37 = 4,236.96/x
  3. Step 3: Cross multiply
    5,108.72x = 7,678.37 × 4,236.96
  4. Step 4: Simplify right side
    5,108.72x = 32,532,946.56
  5. Step 5: Solve for x
    x = 32,532,946.56/5,108.72
  6. Step 6: Final answer
    x = 6,368.12

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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.