Home / 2,178.06-3,005.70-1,706.43

Finding the Fourth Proportional to 2,178.06, 3,005.70 and 1,706.43

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Solution

The fourth proportional to 2,178.06, 3,005.70 and 1,706.43 is: 2,354.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.06 : 3,005.70 = 1,706.43 : x
  2. Step 2: Convert to fraction form
    2,178.06/3,005.70 = 1,706.43/x
  3. Step 3: Cross multiply
    2,178.06x = 3,005.70 × 1,706.43
  4. Step 4: Simplify right side
    2,178.06x = 5,129,016.65
  5. Step 5: Solve for x
    x = 5,129,016.65/2,178.06
  6. Step 6: Final answer
    x = 2,354.86

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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.