Home / 1,822.20-2,511.18-1,379.40

Finding the Fourth Proportional to 1,822.20, 2,511.18 and 1,379.40

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Solution

The fourth proportional to 1,822.20, 2,511.18 and 1,379.40 is: 1,900.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,822.20 : 2,511.18 = 1,379.40 : x
  2. Step 2: Convert to fraction form
    1,822.20/2,511.18 = 1,379.40/x
  3. Step 3: Cross multiply
    1,822.20x = 2,511.18 × 1,379.40
  4. Step 4: Simplify right side
    1,822.20x = 3,463,921.69
  5. Step 5: Solve for x
    x = 3,463,921.69/1,822.20
  6. Step 6: Final answer
    x = 1,900.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.