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Finding the Fourth Proportional to 3,216.59, 4,438.97 and 1,890.03

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Solution

The fourth proportional to 3,216.59, 4,438.97 and 1,890.03 is: 2,608.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216.59 : 4,438.97 = 1,890.03 : x
  2. Step 2: Convert to fraction form
    3,216.59/4,438.97 = 1,890.03/x
  3. Step 3: Cross multiply
    3,216.59x = 4,438.97 × 1,890.03
  4. Step 4: Simplify right side
    3,216.59x = 8,389,777.02
  5. Step 5: Solve for x
    x = 8,389,777.02/3,216.59
  6. Step 6: Final answer
    x = 2,608.29

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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.