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Finding the Fourth Proportional to 1,911.08, 2,866.42 and 524.54

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Solution

The fourth proportional to 1,911.08, 2,866.42 and 524.54 is: 786.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.08 : 2,866.42 = 524.54 : x
  2. Step 2: Convert to fraction form
    1,911.08/2,866.42 = 524.54/x
  3. Step 3: Cross multiply
    1,911.08x = 2,866.42 × 524.54
  4. Step 4: Simplify right side
    1,911.08x = 1,503,551.95
  5. Step 5: Solve for x
    x = 1,503,551.95/1,911.08
  6. Step 6: Final answer
    x = 786.76

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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.