Home / 8,711.24-12,021.78-4,986.44

Finding the Fourth Proportional to 8,711.24, 12,021.78 and 4,986.44

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Solution

The fourth proportional to 8,711.24, 12,021.78 and 4,986.44 is: 6,881.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,711.24 : 12,021.78 = 4,986.44 : x
  2. Step 2: Convert to fraction form
    8,711.24/12,021.78 = 4,986.44/x
  3. Step 3: Cross multiply
    8,711.24x = 12,021.78 × 4,986.44
  4. Step 4: Simplify right side
    8,711.24x = 59,945,884.66
  5. Step 5: Solve for x
    x = 59,945,884.66/8,711.24
  6. Step 6: Final answer
    x = 6,881.44

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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.