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Finding the Fourth Proportional to 1,362.61, 1,878.96 and 1,251.64

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Solution

The fourth proportional to 1,362.61, 1,878.96 and 1,251.64 is: 1,725.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.61 : 1,878.96 = 1,251.64 : x
  2. Step 2: Convert to fraction form
    1,362.61/1,878.96 = 1,251.64/x
  3. Step 3: Cross multiply
    1,362.61x = 1,878.96 × 1,251.64
  4. Step 4: Simplify right side
    1,362.61x = 2,351,781.49
  5. Step 5: Solve for x
    x = 2,351,781.49/1,362.61
  6. Step 6: Final answer
    x = 1,725.94

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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.