Home / 5,085.70-7,631.79-2,164

Finding the Fourth Proportional to 5,085.70, 7,631.79 and 2,164

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Solution

The fourth proportional to 5,085.70, 7,631.79 and 2,164 is: 3,247.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.70 : 7,631.79 = 2,164 : x
  2. Step 2: Convert to fraction form
    5,085.70/7,631.79 = 2,164/x
  3. Step 3: Cross multiply
    5,085.70x = 7,631.79 × 2,164
  4. Step 4: Simplify right side
    5,085.70x = 16,515,193.56
  5. Step 5: Solve for x
    x = 16,515,193.56/5,085.70
  6. Step 6: Final answer
    x = 3,247.38

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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.