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Finding the Fourth Proportional to 1,326.52, 1,976.45 and 1,252

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Solution

The fourth proportional to 1,326.52, 1,976.45 and 1,252 is: 1,865.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326.52 : 1,976.45 = 1,252 : x
  2. Step 2: Convert to fraction form
    1,326.52/1,976.45 = 1,252/x
  3. Step 3: Cross multiply
    1,326.52x = 1,976.45 × 1,252
  4. Step 4: Simplify right side
    1,326.52x = 2,474,515.40
  5. Step 5: Solve for x
    x = 2,474,515.40/1,326.52
  6. Step 6: Final answer
    x = 1,865.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.