Home / 2,453.75-3,680.95-1,138.78

Finding the Fourth Proportional to 2,453.75, 3,680.95 and 1,138.78

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Solution

The fourth proportional to 2,453.75, 3,680.95 and 1,138.78 is: 1,708.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,453.75 : 3,680.95 = 1,138.78 : x
  2. Step 2: Convert to fraction form
    2,453.75/3,680.95 = 1,138.78/x
  3. Step 3: Cross multiply
    2,453.75x = 3,680.95 × 1,138.78
  4. Step 4: Simplify right side
    2,453.75x = 4,191,773.84
  5. Step 5: Solve for x
    x = 4,191,773.84/2,453.75
  6. Step 6: Final answer
    x = 1,708.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.