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Finding the Fourth Proportional to 2,848, 3,928.08 and 1,965.28

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Solution

The fourth proportional to 2,848, 3,928.08 and 1,965.28 is: 2,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,848 : 3,928.08 = 1,965.28 : x
  2. Step 2: Convert to fraction form
    2,848/3,928.08 = 1,965.28/x
  3. Step 3: Cross multiply
    2,848x = 3,928.08 × 1,965.28
  4. Step 4: Simplify right side
    2,848x = 7,719,777.06
  5. Step 5: Solve for x
    x = 7,719,777.06/2,848
  6. Step 6: Final answer
    x = 2,710.60

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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.