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Finding the Fourth Proportional to 3,011.56, 4,518.78 and 1,859.56

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Solution

The fourth proportional to 3,011.56, 4,518.78 and 1,859.56 is: 2,790.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.56 : 4,518.78 = 1,859.56 : x
  2. Step 2: Convert to fraction form
    3,011.56/4,518.78 = 1,859.56/x
  3. Step 3: Cross multiply
    3,011.56x = 4,518.78 × 1,859.56
  4. Step 4: Simplify right side
    3,011.56x = 8,402,942.54
  5. Step 5: Solve for x
    x = 8,402,942.54/3,011.56
  6. Step 6: Final answer
    x = 2,790.23

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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.