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Finding the Fourth Proportional to 2,762.78, 3,813.54 and 1,769.54

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Solution

The fourth proportional to 2,762.78, 3,813.54 and 1,769.54 is: 2,442.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,762.78 : 3,813.54 = 1,769.54 : x
  2. Step 2: Convert to fraction form
    2,762.78/3,813.54 = 1,769.54/x
  3. Step 3: Cross multiply
    2,762.78x = 3,813.54 × 1,769.54
  4. Step 4: Simplify right side
    2,762.78x = 6,748,211.57
  5. Step 5: Solve for x
    x = 6,748,211.57/2,762.78
  6. Step 6: Final answer
    x = 2,442.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.