Home / 3,112.52-4,662.70-1,811.28

Finding the Fourth Proportional to 3,112.52, 4,662.70 and 1,811.28

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Solution

The fourth proportional to 3,112.52, 4,662.70 and 1,811.28 is: 2,713.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.52 : 4,662.70 = 1,811.28 : x
  2. Step 2: Convert to fraction form
    3,112.52/4,662.70 = 1,811.28/x
  3. Step 3: Cross multiply
    3,112.52x = 4,662.70 × 1,811.28
  4. Step 4: Simplify right side
    3,112.52x = 8,445,455.26
  5. Step 5: Solve for x
    x = 8,445,455.26/3,112.52
  6. Step 6: Final answer
    x = 2,713.38

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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.