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Finding the Fourth Proportional to 4,747.96, 7,121.94 and 3,011.32

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Solution

The fourth proportional to 4,747.96, 7,121.94 and 3,011.32 is: 4,516.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,747.96 : 7,121.94 = 3,011.32 : x
  2. Step 2: Convert to fraction form
    4,747.96/7,121.94 = 3,011.32/x
  3. Step 3: Cross multiply
    4,747.96x = 7,121.94 × 3,011.32
  4. Step 4: Simplify right side
    4,747.96x = 21,446,440.36
  5. Step 5: Solve for x
    x = 21,446,440.36/4,747.96
  6. Step 6: Final answer
    x = 4,516.98

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1.5x scale

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.