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Finding the Fourth Proportional to 1,743.80, 2,406.44 and 957.84

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Solution

The fourth proportional to 1,743.80, 2,406.44 and 957.84 is: 1,321.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,743.80 : 2,406.44 = 957.84 : x
  2. Step 2: Convert to fraction form
    1,743.80/2,406.44 = 957.84/x
  3. Step 3: Cross multiply
    1,743.80x = 2,406.44 × 957.84
  4. Step 4: Simplify right side
    1,743.80x = 2,304,984.49
  5. Step 5: Solve for x
    x = 2,304,984.49/1,743.80
  6. Step 6: Final answer
    x = 1,321.82

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1.5x scale

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.