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Finding the Fourth Proportional to 4,815.76, 7,223.22 and 1,305.64

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Solution

The fourth proportional to 4,815.76, 7,223.22 and 1,305.64 is: 1,958.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.76 : 7,223.22 = 1,305.64 : x
  2. Step 2: Convert to fraction form
    4,815.76/7,223.22 = 1,305.64/x
  3. Step 3: Cross multiply
    4,815.76x = 7,223.22 × 1,305.64
  4. Step 4: Simplify right side
    4,815.76x = 9,430,924.96
  5. Step 5: Solve for x
    x = 9,430,924.96/4,815.76
  6. Step 6: Final answer
    x = 1,958.35

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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.