Home / 2,528.82-3,489.43-1,409.70

Finding the Fourth Proportional to 2,528.82, 3,489.43 and 1,409.70

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Solution

The fourth proportional to 2,528.82, 3,489.43 and 1,409.70 is: 1,945.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,528.82 : 3,489.43 = 1,409.70 : x
  2. Step 2: Convert to fraction form
    2,528.82/3,489.43 = 1,409.70/x
  3. Step 3: Cross multiply
    2,528.82x = 3,489.43 × 1,409.70
  4. Step 4: Simplify right side
    2,528.82x = 4,919,061.68
  5. Step 5: Solve for x
    x = 4,919,061.68/2,528.82
  6. Step 6: Final answer
    x = 1,945.20

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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.