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Finding the Fourth Proportional to 5,245.77, 7,868.69 and 1,958.84

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Solution

The fourth proportional to 5,245.77, 7,868.69 and 1,958.84 is: 2,938.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.77 : 7,868.69 = 1,958.84 : x
  2. Step 2: Convert to fraction form
    5,245.77/7,868.69 = 1,958.84/x
  3. Step 3: Cross multiply
    5,245.77x = 7,868.69 × 1,958.84
  4. Step 4: Simplify right side
    5,245.77x = 15,413,492.44
  5. Step 5: Solve for x
    x = 15,413,492.44/5,245.77
  6. Step 6: Final answer
    x = 2,938.27

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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.