Home / 3,878.70-5,814.78-2,705.25

Finding the Fourth Proportional to 3,878.70, 5,814.78 and 2,705.25

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Solution

The fourth proportional to 3,878.70, 5,814.78 and 2,705.25 is: 4,055.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.70 : 5,814.78 = 2,705.25 : x
  2. Step 2: Convert to fraction form
    3,878.70/5,814.78 = 2,705.25/x
  3. Step 3: Cross multiply
    3,878.70x = 5,814.78 × 2,705.25
  4. Step 4: Simplify right side
    3,878.70x = 15,730,433.60
  5. Step 5: Solve for x
    x = 15,730,433.60/3,878.70
  6. Step 6: Final answer
    x = 4,055.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.