Home / 2,878.41-3,971.67-2,170.05

Finding the Fourth Proportional to 2,878.41, 3,971.67 and 2,170.05

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Solution

The fourth proportional to 2,878.41, 3,971.67 and 2,170.05 is: 2,994.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.41 : 3,971.67 = 2,170.05 : x
  2. Step 2: Convert to fraction form
    2,878.41/3,971.67 = 2,170.05/x
  3. Step 3: Cross multiply
    2,878.41x = 3,971.67 × 2,170.05
  4. Step 4: Simplify right side
    2,878.41x = 8,618,722.48
  5. Step 5: Solve for x
    x = 8,618,722.48/2,878.41
  6. Step 6: Final answer
    x = 2,994.27

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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.