Home / 2,799.80-4,199.70-2,738.30

Finding the Fourth Proportional to 2,799.80, 4,199.70 and 2,738.30

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Solution

The fourth proportional to 2,799.80, 4,199.70 and 2,738.30 is: 4,107.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.80 : 4,199.70 = 2,738.30 : x
  2. Step 2: Convert to fraction form
    2,799.80/4,199.70 = 2,738.30/x
  3. Step 3: Cross multiply
    2,799.80x = 4,199.70 × 2,738.30
  4. Step 4: Simplify right side
    2,799.80x = 11,500,038.51
  5. Step 5: Solve for x
    x = 11,500,038.51/2,799.80
  6. Step 6: Final answer
    x = 4,107.45

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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.