Home / 1,894.21-2,615.03-1,328.78

Finding the Fourth Proportional to 1,894.21, 2,615.03 and 1,328.78

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Solution

The fourth proportional to 1,894.21, 2,615.03 and 1,328.78 is: 1,834.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,894.21 : 2,615.03 = 1,328.78 : x
  2. Step 2: Convert to fraction form
    1,894.21/2,615.03 = 1,328.78/x
  3. Step 3: Cross multiply
    1,894.21x = 2,615.03 × 1,328.78
  4. Step 4: Simplify right side
    1,894.21x = 3,474,799.56
  5. Step 5: Solve for x
    x = 3,474,799.56/1,894.21
  6. Step 6: Final answer
    x = 1,834.43

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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.