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Finding the Fourth Proportional to 2,891.30, 4,336.47 and 943.02

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Solution

The fourth proportional to 2,891.30, 4,336.47 and 943.02 is: 1,414.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.30 : 4,336.47 = 943.02 : x
  2. Step 2: Convert to fraction form
    2,891.30/4,336.47 = 943.02/x
  3. Step 3: Cross multiply
    2,891.30x = 4,336.47 × 943.02
  4. Step 4: Simplify right side
    2,891.30x = 4,089,377.94
  5. Step 5: Solve for x
    x = 4,089,377.94/2,891.30
  6. Step 6: Final answer
    x = 1,414.38

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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.