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Finding the Fourth Proportional to 2,687.10, 4,029.99 and 955.74

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Solution

The fourth proportional to 2,687.10, 4,029.99 and 955.74 is: 1,433.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.10 : 4,029.99 = 955.74 : x
  2. Step 2: Convert to fraction form
    2,687.10/4,029.99 = 955.74/x
  3. Step 3: Cross multiply
    2,687.10x = 4,029.99 × 955.74
  4. Step 4: Simplify right side
    2,687.10x = 3,851,622.64
  5. Step 5: Solve for x
    x = 3,851,622.64/2,687.10
  6. Step 6: Final answer
    x = 1,433.38

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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.