Home / 2,178.36-3,005.84-1,234.02

Finding the Fourth Proportional to 2,178.36, 3,005.84 and 1,234.02

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Solution

The fourth proportional to 2,178.36, 3,005.84 and 1,234.02 is: 1,702.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.36 : 3,005.84 = 1,234.02 : x
  2. Step 2: Convert to fraction form
    2,178.36/3,005.84 = 1,234.02/x
  3. Step 3: Cross multiply
    2,178.36x = 3,005.84 × 1,234.02
  4. Step 4: Simplify right side
    2,178.36x = 3,709,266.68
  5. Step 5: Solve for x
    x = 3,709,266.68/2,178.36
  6. Step 6: Final answer
    x = 1,702.78

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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.