Home / 2,199.37-3,299.89-1,420.86

Finding the Fourth Proportional to 2,199.37, 3,299.89 and 1,420.86

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Solution

The fourth proportional to 2,199.37, 3,299.89 and 1,420.86 is: 2,131.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199.37 : 3,299.89 = 1,420.86 : x
  2. Step 2: Convert to fraction form
    2,199.37/3,299.89 = 1,420.86/x
  3. Step 3: Cross multiply
    2,199.37x = 3,299.89 × 1,420.86
  4. Step 4: Simplify right side
    2,199.37x = 4,688,674.63
  5. Step 5: Solve for x
    x = 4,688,674.63/2,199.37
  6. Step 6: Final answer
    x = 2,131.83

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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.