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Finding the Fourth Proportional to 1,743.81, 2,406.40 and 957.93

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Solution

The fourth proportional to 1,743.81, 2,406.40 and 957.93 is: 1,321.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,743.81 : 2,406.40 = 957.93 : x
  2. Step 2: Convert to fraction form
    1,743.81/2,406.40 = 957.93/x
  3. Step 3: Cross multiply
    1,743.81x = 2,406.40 × 957.93
  4. Step 4: Simplify right side
    1,743.81x = 2,305,162.75
  5. Step 5: Solve for x
    x = 2,305,162.75/1,743.81
  6. Step 6: Final answer
    x = 1,321.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.