Home / 3,122.40-4,693.32-2,840.52

Finding the Fourth Proportional to 3,122.40, 4,693.32 and 2,840.52

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Solution

The fourth proportional to 3,122.40, 4,693.32 and 2,840.52 is: 4,269.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.40 : 4,693.32 = 2,840.52 : x
  2. Step 2: Convert to fraction form
    3,122.40/4,693.32 = 2,840.52/x
  3. Step 3: Cross multiply
    3,122.40x = 4,693.32 × 2,840.52
  4. Step 4: Simplify right side
    3,122.40x = 13,331,469.33
  5. Step 5: Solve for x
    x = 13,331,469.33/3,122.40
  6. Step 6: Final answer
    x = 4,269.62

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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.