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Finding the Fourth Proportional to 2,766.74, 4,150.11 and 917.36

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Solution

The fourth proportional to 2,766.74, 4,150.11 and 917.36 is: 1,376.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,766.74 : 4,150.11 = 917.36 : x
  2. Step 2: Convert to fraction form
    2,766.74/4,150.11 = 917.36/x
  3. Step 3: Cross multiply
    2,766.74x = 4,150.11 × 917.36
  4. Step 4: Simplify right side
    2,766.74x = 3,807,124.16
  5. Step 5: Solve for x
    x = 3,807,124.16/2,766.74
  6. Step 6: Final answer
    x = 1,376.03

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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.