Home / 3,128.87-4,693.28-1,255.60

Finding the Fourth Proportional to 3,128.87, 4,693.28 and 1,255.60

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Solution

The fourth proportional to 3,128.87, 4,693.28 and 1,255.60 is: 1,883.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.87 : 4,693.28 = 1,255.60 : x
  2. Step 2: Convert to fraction form
    3,128.87/4,693.28 = 1,255.60/x
  3. Step 3: Cross multiply
    3,128.87x = 4,693.28 × 1,255.60
  4. Step 4: Simplify right side
    3,128.87x = 5,892,876.09
  5. Step 5: Solve for x
    x = 5,892,876.09/3,128.87
  6. Step 6: Final answer
    x = 1,883.39

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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.