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Finding the Fourth Proportional to 2,237.51, 3,355.45 and 851.21

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Solution

The fourth proportional to 2,237.51, 3,355.45 and 851.21 is: 1,276.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,237.51 : 3,355.45 = 851.21 : x
  2. Step 2: Convert to fraction form
    2,237.51/3,355.45 = 851.21/x
  3. Step 3: Cross multiply
    2,237.51x = 3,355.45 × 851.21
  4. Step 4: Simplify right side
    2,237.51x = 2,856,173.69
  5. Step 5: Solve for x
    x = 2,856,173.69/2,237.51
  6. Step 6: Final answer
    x = 1,276.50

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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.