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Finding the Fourth Proportional to 2,891.45, 4,336.20 and 943.20

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Solution

The fourth proportional to 2,891.45, 4,336.20 and 943.20 is: 1,414.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.45 : 4,336.20 = 943.20 : x
  2. Step 2: Convert to fraction form
    2,891.45/4,336.20 = 943.20/x
  3. Step 3: Cross multiply
    2,891.45x = 4,336.20 × 943.20
  4. Step 4: Simplify right side
    2,891.45x = 4,089,903.84
  5. Step 5: Solve for x
    x = 4,089,903.84/2,891.45
  6. Step 6: Final answer
    x = 1,414.48

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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.