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Finding the Fourth Proportional to 2,135.48, 3,201.42 and 901.76

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Solution

The fourth proportional to 2,135.48, 3,201.42 and 901.76 is: 1,351.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.48 : 3,201.42 = 901.76 : x
  2. Step 2: Convert to fraction form
    2,135.48/3,201.42 = 901.76/x
  3. Step 3: Cross multiply
    2,135.48x = 3,201.42 × 901.76
  4. Step 4: Simplify right side
    2,135.48x = 2,886,912.50
  5. Step 5: Solve for x
    x = 2,886,912.50/2,135.48
  6. Step 6: Final answer
    x = 1,351.88

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1.5x scale

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.