Home / 5,078.55-7,007.46-2,840.44

Finding the Fourth Proportional to 5,078.55, 7,007.46 and 2,840.44

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Solution

The fourth proportional to 5,078.55, 7,007.46 and 2,840.44 is: 3,919.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.55 : 7,007.46 = 2,840.44 : x
  2. Step 2: Convert to fraction form
    5,078.55/7,007.46 = 2,840.44/x
  3. Step 3: Cross multiply
    5,078.55x = 7,007.46 × 2,840.44
  4. Step 4: Simplify right side
    5,078.55x = 19,904,290.34
  5. Step 5: Solve for x
    x = 19,904,290.34/5,078.55
  6. Step 6: Final answer
    x = 3,919.29

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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.