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Finding the Fourth Proportional to 5,078.44, 7,008.42 and 2,840.32

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Solution

The fourth proportional to 5,078.44, 7,008.42 and 2,840.32 is: 3,919.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.44 : 7,008.42 = 2,840.32 : x
  2. Step 2: Convert to fraction form
    5,078.44/7,008.42 = 2,840.32/x
  3. Step 3: Cross multiply
    5,078.44x = 7,008.42 × 2,840.32
  4. Step 4: Simplify right side
    5,078.44x = 19,906,155.49
  5. Step 5: Solve for x
    x = 19,906,155.49/5,078.44
  6. Step 6: Final answer
    x = 3,919.74

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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.