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Finding the Fourth Proportional to 3,230.70, 4,459.22 and 1,905.29

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Solution

The fourth proportional to 3,230.70, 4,459.22 and 1,905.29 is: 2,629.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,230.70 : 4,459.22 = 1,905.29 : x
  2. Step 2: Convert to fraction form
    3,230.70/4,459.22 = 1,905.29/x
  3. Step 3: Cross multiply
    3,230.70x = 4,459.22 × 1,905.29
  4. Step 4: Simplify right side
    3,230.70x = 8,496,075.45
  5. Step 5: Solve for x
    x = 8,496,075.45/3,230.70
  6. Step 6: Final answer
    x = 2,629.79

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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.