Home / 2,528.12-3,489-1,644.68

Finding the Fourth Proportional to 2,528.12, 3,489 and 1,644.68

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Solution

The fourth proportional to 2,528.12, 3,489 and 1,644.68 is: 2,269.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,528.12 : 3,489 = 1,644.68 : x
  2. Step 2: Convert to fraction form
    2,528.12/3,489 = 1,644.68/x
  3. Step 3: Cross multiply
    2,528.12x = 3,489 × 1,644.68
  4. Step 4: Simplify right side
    2,528.12x = 5,738,288.52
  5. Step 5: Solve for x
    x = 5,738,288.52/2,528.12
  6. Step 6: Final answer
    x = 2,269.78

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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.