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Finding the Fourth Proportional to 2,709.98, 4,065.09 and 955.22

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Solution

The fourth proportional to 2,709.98, 4,065.09 and 955.22 is: 1,432.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,709.98 : 4,065.09 = 955.22 : x
  2. Step 2: Convert to fraction form
    2,709.98/4,065.09 = 955.22/x
  3. Step 3: Cross multiply
    2,709.98x = 4,065.09 × 955.22
  4. Step 4: Simplify right side
    2,709.98x = 3,883,042.80
  5. Step 5: Solve for x
    x = 3,883,042.80/2,709.98
  6. Step 6: Final answer
    x = 1,432.87

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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.