Home / 2,259.80-3,390.98-1,219.79

Finding the Fourth Proportional to 2,259.80, 3,390.98 and 1,219.79

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Solution

The fourth proportional to 2,259.80, 3,390.98 and 1,219.79 is: 1,830.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,259.80 : 3,390.98 = 1,219.79 : x
  2. Step 2: Convert to fraction form
    2,259.80/3,390.98 = 1,219.79/x
  3. Step 3: Cross multiply
    2,259.80x = 3,390.98 × 1,219.79
  4. Step 4: Simplify right side
    2,259.80x = 4,136,260.44
  5. Step 5: Solve for x
    x = 4,136,260.44/2,259.80
  6. Step 6: Final answer
    x = 1,830.37

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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.