Home / 2,178.72-3,007.08-1,433.88

Finding the Fourth Proportional to 2,178.72, 3,007.08 and 1,433.88

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Solution

The fourth proportional to 2,178.72, 3,007.08 and 1,433.88 is: 1,979.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.72 : 3,007.08 = 1,433.88 : x
  2. Step 2: Convert to fraction form
    2,178.72/3,007.08 = 1,433.88/x
  3. Step 3: Cross multiply
    2,178.72x = 3,007.08 × 1,433.88
  4. Step 4: Simplify right side
    2,178.72x = 4,311,791.87
  5. Step 5: Solve for x
    x = 4,311,791.87/2,178.72
  6. Step 6: Final answer
    x = 1,979.05

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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.