Home / 2,179.38-3,000.96-1,878.06

Finding the Fourth Proportional to 2,179.38, 3,000.96 and 1,878.06

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Solution

The fourth proportional to 2,179.38, 3,000.96 and 1,878.06 is: 2,586.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.38 : 3,000.96 = 1,878.06 : x
  2. Step 2: Convert to fraction form
    2,179.38/3,000.96 = 1,878.06/x
  3. Step 3: Cross multiply
    2,179.38x = 3,000.96 × 1,878.06
  4. Step 4: Simplify right side
    2,179.38x = 5,635,982.94
  5. Step 5: Solve for x
    x = 5,635,982.94/2,179.38
  6. Step 6: Final answer
    x = 2,586.05

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1.5x scale

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.