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Finding the Fourth Proportional to 5,197.86, 7,173.03 and 2,840.00

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Solution

The fourth proportional to 5,197.86, 7,173.03 and 2,840.00 is: 3,919.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,197.86 : 7,173.03 = 2,840.00 : x
  2. Step 2: Convert to fraction form
    5,197.86/7,173.03 = 2,840.00/x
  3. Step 3: Cross multiply
    5,197.86x = 7,173.03 × 2,840.00
  4. Step 4: Simplify right side
    5,197.86x = 20,371,369.33
  5. Step 5: Solve for x
    x = 20,371,369.33/5,197.86
  6. Step 6: Final answer
    x = 3,919.18

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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.