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Finding the Fourth Proportional to 1,673.26, 2,307.36 and 1,438

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Solution

The fourth proportional to 1,673.26, 2,307.36 and 1,438 is: 1,982.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673.26 : 2,307.36 = 1,438 : x
  2. Step 2: Convert to fraction form
    1,673.26/2,307.36 = 1,438/x
  3. Step 3: Cross multiply
    1,673.26x = 2,307.36 × 1,438
  4. Step 4: Simplify right side
    1,673.26x = 3,317,983.68
  5. Step 5: Solve for x
    x = 3,317,983.68/1,673.26
  6. Step 6: Final answer
    x = 1,982.95

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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.