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Finding the Fourth Proportional to 1,839.07, 2,758.34 and 743.18

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Solution

The fourth proportional to 1,839.07, 2,758.34 and 743.18 is: 1,114.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,839.07 : 2,758.34 = 743.18 : x
  2. Step 2: Convert to fraction form
    1,839.07/2,758.34 = 743.18/x
  3. Step 3: Cross multiply
    1,839.07x = 2,758.34 × 743.18
  4. Step 4: Simplify right side
    1,839.07x = 2,049,931.19
  5. Step 5: Solve for x
    x = 2,049,931.19/1,839.07
  6. Step 6: Final answer
    x = 1,114.66

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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.