Home / 5,078.48-7,008.42-2,840.26

Finding the Fourth Proportional to 5,078.48, 7,008.42 and 2,840.26

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Solution

The fourth proportional to 5,078.48, 7,008.42 and 2,840.26 is: 3,919.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.48 : 7,008.42 = 2,840.26 : x
  2. Step 2: Convert to fraction form
    5,078.48/7,008.42 = 2,840.26/x
  3. Step 3: Cross multiply
    5,078.48x = 7,008.42 × 2,840.26
  4. Step 4: Simplify right side
    5,078.48x = 19,905,734.99
  5. Step 5: Solve for x
    x = 19,905,734.99/5,078.48
  6. Step 6: Final answer
    x = 3,919.62

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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.