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Finding the Fourth Proportional to 1,911.06, 2,866.46 and 524.48

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Solution

The fourth proportional to 1,911.06, 2,866.46 and 524.48 is: 786.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.06 : 2,866.46 = 524.48 : x
  2. Step 2: Convert to fraction form
    1,911.06/2,866.46 = 524.48/x
  3. Step 3: Cross multiply
    1,911.06x = 2,866.46 × 524.48
  4. Step 4: Simplify right side
    1,911.06x = 1,503,383.99
  5. Step 5: Solve for x
    x = 1,503,383.99/1,911.06
  6. Step 6: Final answer
    x = 786.68

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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.