Home / 1,949.76-2,936.08-1,405.71

Finding the Fourth Proportional to 1,949.76, 2,936.08 and 1,405.71

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Solution

The fourth proportional to 1,949.76, 2,936.08 and 1,405.71 is: 2,116.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.76 : 2,936.08 = 1,405.71 : x
  2. Step 2: Convert to fraction form
    1,949.76/2,936.08 = 1,405.71/x
  3. Step 3: Cross multiply
    1,949.76x = 2,936.08 × 1,405.71
  4. Step 4: Simplify right side
    1,949.76x = 4,127,277.02
  5. Step 5: Solve for x
    x = 4,127,277.02/1,949.76
  6. Step 6: Final answer
    x = 2,116.81

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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.