Home / 3,858.60-5,321.52-3,112.32

Finding the Fourth Proportional to 3,858.60, 5,321.52 and 3,112.32

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Solution

The fourth proportional to 3,858.60, 5,321.52 and 3,112.32 is: 4,292.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.60 : 5,321.52 = 3,112.32 : x
  2. Step 2: Convert to fraction form
    3,858.60/5,321.52 = 3,112.32/x
  3. Step 3: Cross multiply
    3,858.60x = 5,321.52 × 3,112.32
  4. Step 4: Simplify right side
    3,858.60x = 16,562,273.13
  5. Step 5: Solve for x
    x = 16,562,273.13/3,858.60
  6. Step 6: Final answer
    x = 4,292.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.