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Finding the Fourth Proportional to 5,183.90, 7,152.89 and 4,921.19

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Solution

The fourth proportional to 5,183.90, 7,152.89 and 4,921.19 is: 6,790.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,183.90 : 7,152.89 = 4,921.19 : x
  2. Step 2: Convert to fraction form
    5,183.90/7,152.89 = 4,921.19/x
  3. Step 3: Cross multiply
    5,183.90x = 7,152.89 × 4,921.19
  4. Step 4: Simplify right side
    5,183.90x = 35,200,670.37
  5. Step 5: Solve for x
    x = 35,200,670.37/5,183.90
  6. Step 6: Final answer
    x = 6,790.39

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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.