Home / 2,178.63-3,267.90-1,813.68

Finding the Fourth Proportional to 2,178.63, 3,267.90 and 1,813.68

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Solution

The fourth proportional to 2,178.63, 3,267.90 and 1,813.68 is: 2,720.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.63 : 3,267.90 = 1,813.68 : x
  2. Step 2: Convert to fraction form
    2,178.63/3,267.90 = 1,813.68/x
  3. Step 3: Cross multiply
    2,178.63x = 3,267.90 × 1,813.68
  4. Step 4: Simplify right side
    2,178.63x = 5,926,924.87
  5. Step 5: Solve for x
    x = 5,926,924.87/2,178.63
  6. Step 6: Final answer
    x = 2,720.48

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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.