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Finding the Fourth Proportional to 2,260.91, 3,390.46 and 943.80

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Solution

The fourth proportional to 2,260.91, 3,390.46 and 943.80 is: 1,415.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,260.91 : 3,390.46 = 943.80 : x
  2. Step 2: Convert to fraction form
    2,260.91/3,390.46 = 943.80/x
  3. Step 3: Cross multiply
    2,260.91x = 3,390.46 × 943.80
  4. Step 4: Simplify right side
    2,260.91x = 3,199,920.15
  5. Step 5: Solve for x
    x = 3,199,920.15/2,260.91
  6. Step 6: Final answer
    x = 1,415.32

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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.