Home / 3,289.70-4,537.56-2,112.20

Finding the Fourth Proportional to 3,289.70, 4,537.56 and 2,112.20

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Solution

The fourth proportional to 3,289.70, 4,537.56 and 2,112.20 is: 2,913.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,289.70 : 4,537.56 = 2,112.20 : x
  2. Step 2: Convert to fraction form
    3,289.70/4,537.56 = 2,112.20/x
  3. Step 3: Cross multiply
    3,289.70x = 4,537.56 × 2,112.20
  4. Step 4: Simplify right side
    3,289.70x = 9,584,234.23
  5. Step 5: Solve for x
    x = 9,584,234.23/3,289.70
  6. Step 6: Final answer
    x = 2,913.41

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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.