Home / 5,197.86-7,173.18-2,840.14

Finding the Fourth Proportional to 5,197.86, 7,173.18 and 2,840.14

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Solution

The fourth proportional to 5,197.86, 7,173.18 and 2,840.14 is: 3,919.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,197.86 : 7,173.18 = 2,840.14 : x
  2. Step 2: Convert to fraction form
    5,197.86/7,173.18 = 2,840.14/x
  3. Step 3: Cross multiply
    5,197.86x = 7,173.18 × 2,840.14
  4. Step 4: Simplify right side
    5,197.86x = 20,372,835.45
  5. Step 5: Solve for x
    x = 20,372,835.45/5,197.86
  6. Step 6: Final answer
    x = 3,919.47

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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.