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Finding the Fourth Proportional to 2,159.37, 3,239.54 and 620.25

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Solution

The fourth proportional to 2,159.37, 3,239.54 and 620.25 is: 930.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.37 : 3,239.54 = 620.25 : x
  2. Step 2: Convert to fraction form
    2,159.37/3,239.54 = 620.25/x
  3. Step 3: Cross multiply
    2,159.37x = 3,239.54 × 620.25
  4. Step 4: Simplify right side
    2,159.37x = 2,009,321.58
  5. Step 5: Solve for x
    x = 2,009,321.58/2,159.37
  6. Step 6: Final answer
    x = 930.51

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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.