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Finding the Fourth Proportional to 1,955.76, 2,933.56 and 969.31

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Solution

The fourth proportional to 1,955.76, 2,933.56 and 969.31 is: 1,453.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955.76 : 2,933.56 = 969.31 : x
  2. Step 2: Convert to fraction form
    1,955.76/2,933.56 = 969.31/x
  3. Step 3: Cross multiply
    1,955.76x = 2,933.56 × 969.31
  4. Step 4: Simplify right side
    1,955.76x = 2,843,529.04
  5. Step 5: Solve for x
    x = 2,843,529.04/1,955.76
  6. Step 6: Final answer
    x = 1,453.93

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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.