Home / 1,821.35-2,730.84-999.39

Finding the Fourth Proportional to 1,821.35, 2,730.84 and 999.39

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Solution

The fourth proportional to 1,821.35, 2,730.84 and 999.39 is: 1,498.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.35 : 2,730.84 = 999.39 : x
  2. Step 2: Convert to fraction form
    1,821.35/2,730.84 = 999.39/x
  3. Step 3: Cross multiply
    1,821.35x = 2,730.84 × 999.39
  4. Step 4: Simplify right side
    1,821.35x = 2,729,174.19
  5. Step 5: Solve for x
    x = 2,729,174.19/1,821.35
  6. Step 6: Final answer
    x = 1,498.44

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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.