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Finding the Fourth Proportional to 2,766.60, 4,150.14 and 917.64

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Solution

The fourth proportional to 2,766.60, 4,150.14 and 917.64 is: 1,376.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,766.60 : 4,150.14 = 917.64 : x
  2. Step 2: Convert to fraction form
    2,766.60/4,150.14 = 917.64/x
  3. Step 3: Cross multiply
    2,766.60x = 4,150.14 × 917.64
  4. Step 4: Simplify right side
    2,766.60x = 3,808,334.47
  5. Step 5: Solve for x
    x = 3,808,334.47/2,766.60
  6. Step 6: Final answer
    x = 1,376.54

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1.5x scale

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.