Home / 8,912.86-13,364.79-5,216.20

Finding the Fourth Proportional to 8,912.86, 13,364.79 and 5,216.20

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Solution

The fourth proportional to 8,912.86, 13,364.79 and 5,216.20 is: 7,821.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.86 : 13,364.79 = 5,216.20 : x
  2. Step 2: Convert to fraction form
    8,912.86/13,364.79 = 5,216.20/x
  3. Step 3: Cross multiply
    8,912.86x = 13,364.79 × 5,216.20
  4. Step 4: Simplify right side
    8,912.86x = 69,713,417.60
  5. Step 5: Solve for x
    x = 69,713,417.60/8,912.86
  6. Step 6: Final answer
    x = 7,821.67

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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.