Home / 10,771.86-16,157.88-2,981.28

Finding the Fourth Proportional to 10,771.86, 16,157.88 and 2,981.28

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Solution

The fourth proportional to 10,771.86, 16,157.88 and 2,981.28 is: 4,471.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,771.86 : 16,157.88 = 2,981.28 : x
  2. Step 2: Convert to fraction form
    10,771.86/16,157.88 = 2,981.28/x
  3. Step 3: Cross multiply
    10,771.86x = 16,157.88 × 2,981.28
  4. Step 4: Simplify right side
    10,771.86x = 48,171,164.49
  5. Step 5: Solve for x
    x = 48,171,164.49/10,771.86
  6. Step 6: Final answer
    x = 4,471.94

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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.