Home / 2,739.80-4,112.40-1,354.70

Finding the Fourth Proportional to 2,739.80, 4,112.40 and 1,354.70

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Solution

The fourth proportional to 2,739.80, 4,112.40 and 1,354.70 is: 2,033.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.80 : 4,112.40 = 1,354.70 : x
  2. Step 2: Convert to fraction form
    2,739.80/4,112.40 = 1,354.70/x
  3. Step 3: Cross multiply
    2,739.80x = 4,112.40 × 1,354.70
  4. Step 4: Simplify right side
    2,739.80x = 5,571,068.28
  5. Step 5: Solve for x
    x = 5,571,068.28/2,739.80
  6. Step 6: Final answer
    x = 2,033.39

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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.