Home / 2,453.25-3,385.35-1,390.80

Finding the Fourth Proportional to 2,453.25, 3,385.35 and 1,390.80

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Solution

The fourth proportional to 2,453.25, 3,385.35 and 1,390.80 is: 1,919.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,453.25 : 3,385.35 = 1,390.80 : x
  2. Step 2: Convert to fraction form
    2,453.25/3,385.35 = 1,390.80/x
  3. Step 3: Cross multiply
    2,453.25x = 3,385.35 × 1,390.80
  4. Step 4: Simplify right side
    2,453.25x = 4,708,344.78
  5. Step 5: Solve for x
    x = 4,708,344.78/2,453.25
  6. Step 6: Final answer
    x = 1,919.23

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.