Home / 2,528.78-3,489.82-1,394.50

Finding the Fourth Proportional to 2,528.78, 3,489.82 and 1,394.50

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Solution

The fourth proportional to 2,528.78, 3,489.82 and 1,394.50 is: 1,924.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,528.78 : 3,489.82 = 1,394.50 : x
  2. Step 2: Convert to fraction form
    2,528.78/3,489.82 = 1,394.50/x
  3. Step 3: Cross multiply
    2,528.78x = 3,489.82 × 1,394.50
  4. Step 4: Simplify right side
    2,528.78x = 4,866,553.99
  5. Step 5: Solve for x
    x = 4,866,553.99/2,528.78
  6. Step 6: Final answer
    x = 1,924.47

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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.