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Finding the Fourth Proportional to 2,782.96, 4,173.63 and 834.64

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Solution

The fourth proportional to 2,782.96, 4,173.63 and 834.64 is: 1,251.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.96 : 4,173.63 = 834.64 : x
  2. Step 2: Convert to fraction form
    2,782.96/4,173.63 = 834.64/x
  3. Step 3: Cross multiply
    2,782.96x = 4,173.63 × 834.64
  4. Step 4: Simplify right side
    2,782.96x = 3,483,478.54
  5. Step 5: Solve for x
    x = 3,483,478.54/2,782.96
  6. Step 6: Final answer
    x = 1,251.72

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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.