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Finding the Fourth Proportional to 3,768.48, 5,648.40 and 1,458

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Solution

The fourth proportional to 3,768.48, 5,648.40 and 1,458 is: 2,185.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,768.48 : 5,648.40 = 1,458 : x
  2. Step 2: Convert to fraction form
    3,768.48/5,648.40 = 1,458/x
  3. Step 3: Cross multiply
    3,768.48x = 5,648.40 × 1,458
  4. Step 4: Simplify right side
    3,768.48x = 8,235,367.20
  5. Step 5: Solve for x
    x = 8,235,367.20/3,768.48
  6. Step 6: Final answer
    x = 2,185.33

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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.