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Finding the Fourth Proportional to 5,197.15, 7,795.77 and 1,910.98

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Solution

The fourth proportional to 5,197.15, 7,795.77 and 1,910.98 is: 2,866.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,197.15 : 7,795.77 = 1,910.98 : x
  2. Step 2: Convert to fraction form
    5,197.15/7,795.77 = 1,910.98/x
  3. Step 3: Cross multiply
    5,197.15x = 7,795.77 × 1,910.98
  4. Step 4: Simplify right side
    5,197.15x = 14,897,560.55
  5. Step 5: Solve for x
    x = 14,897,560.55/5,197.15
  6. Step 6: Final answer
    x = 2,866.49

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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.