Home / 8,768.64-13,145.14-3,220.72

Finding the Fourth Proportional to 8,768.64, 13,145.14 and 3,220.72

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Solution

The fourth proportional to 8,768.64, 13,145.14 and 3,220.72 is: 4,828.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,768.64 : 13,145.14 = 3,220.72 : x
  2. Step 2: Convert to fraction form
    8,768.64/13,145.14 = 3,220.72/x
  3. Step 3: Cross multiply
    8,768.64x = 13,145.14 × 3,220.72
  4. Step 4: Simplify right side
    8,768.64x = 42,336,815.30
  5. Step 5: Solve for x
    x = 42,336,815.30/8,768.64
  6. Step 6: Final answer
    x = 4,828.21

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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.