Home / 8,129.21-11,216.43-4,771.89

Finding the Fourth Proportional to 8,129.21, 11,216.43 and 4,771.89

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Solution

The fourth proportional to 8,129.21, 11,216.43 and 4,771.89 is: 6,584.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.21 : 11,216.43 = 4,771.89 : x
  2. Step 2: Convert to fraction form
    8,129.21/11,216.43 = 4,771.89/x
  3. Step 3: Cross multiply
    8,129.21x = 11,216.43 × 4,771.89
  4. Step 4: Simplify right side
    8,129.21x = 53,523,570.15
  5. Step 5: Solve for x
    x = 53,523,570.15/8,129.21
  6. Step 6: Final answer
    x = 6,584.11

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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.