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Finding the Fourth Proportional to 2,890.86, 4,336.47 and 943.26

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Solution

The fourth proportional to 2,890.86, 4,336.47 and 943.26 is: 1,414.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.86 : 4,336.47 = 943.26 : x
  2. Step 2: Convert to fraction form
    2,890.86/4,336.47 = 943.26/x
  3. Step 3: Cross multiply
    2,890.86x = 4,336.47 × 943.26
  4. Step 4: Simplify right side
    2,890.86x = 4,090,418.69
  5. Step 5: Solve for x
    x = 4,090,418.69/2,890.86
  6. Step 6: Final answer
    x = 1,414.95

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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.