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Finding the Fourth Proportional to 4,679.51, 7,019.27 and 3,122.55

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Solution

The fourth proportional to 4,679.51, 7,019.27 and 3,122.55 is: 4,683.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.51 : 7,019.27 = 3,122.55 : x
  2. Step 2: Convert to fraction form
    4,679.51/7,019.27 = 3,122.55/x
  3. Step 3: Cross multiply
    4,679.51x = 7,019.27 × 3,122.55
  4. Step 4: Simplify right side
    4,679.51x = 21,918,021.54
  5. Step 5: Solve for x
    x = 21,918,021.54/4,679.51
  6. Step 6: Final answer
    x = 4,683.83

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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.