Home / 3,085.40-4,253.46-1,905.80

Finding the Fourth Proportional to 3,085.40, 4,253.46 and 1,905.80

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Solution

The fourth proportional to 3,085.40, 4,253.46 and 1,905.80 is: 2,627.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.40 : 4,253.46 = 1,905.80 : x
  2. Step 2: Convert to fraction form
    3,085.40/4,253.46 = 1,905.80/x
  3. Step 3: Cross multiply
    3,085.40x = 4,253.46 × 1,905.80
  4. Step 4: Simplify right side
    3,085.40x = 8,106,244.07
  5. Step 5: Solve for x
    x = 8,106,244.07/3,085.40
  6. Step 6: Final answer
    x = 2,627.29

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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.