Home / 5,285.37-7,928.42-2,122.81

Finding the Fourth Proportional to 5,285.37, 7,928.42 and 2,122.81

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Solution

The fourth proportional to 5,285.37, 7,928.42 and 2,122.81 is: 3,184.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.37 : 7,928.42 = 2,122.81 : x
  2. Step 2: Convert to fraction form
    5,285.37/7,928.42 = 2,122.81/x
  3. Step 3: Cross multiply
    5,285.37x = 7,928.42 × 2,122.81
  4. Step 4: Simplify right side
    5,285.37x = 16,830,514.75
  5. Step 5: Solve for x
    x = 16,830,514.75/5,285.37
  6. Step 6: Final answer
    x = 3,184.36

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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.