Home / 8,921.94-12,318.06-5,736.67

Finding the Fourth Proportional to 8,921.94, 12,318.06 and 5,736.67

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Solution

The fourth proportional to 8,921.94, 12,318.06 and 5,736.67 is: 7,920.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.94 : 12,318.06 = 5,736.67 : x
  2. Step 2: Convert to fraction form
    8,921.94/12,318.06 = 5,736.67/x
  3. Step 3: Cross multiply
    8,921.94x = 12,318.06 × 5,736.67
  4. Step 4: Simplify right side
    8,921.94x = 70,664,554.99
  5. Step 5: Solve for x
    x = 70,664,554.99/8,921.94
  6. Step 6: Final answer
    x = 7,920.31

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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.