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Finding the Fourth Proportional to 1,949.98, 2,936.45 and 1,405.99

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Solution

The fourth proportional to 1,949.98, 2,936.45 and 1,405.99 is: 2,117.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.98 : 2,936.45 = 1,405.99 : x
  2. Step 2: Convert to fraction form
    1,949.98/2,936.45 = 1,405.99/x
  3. Step 3: Cross multiply
    1,949.98x = 2,936.45 × 1,405.99
  4. Step 4: Simplify right side
    1,949.98x = 4,128,619.34
  5. Step 5: Solve for x
    x = 4,128,619.34/1,949.98
  6. Step 6: Final answer
    x = 2,117.26

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.