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Finding the Fourth Proportional to 2,928.65, 4,393.20 and 848.69

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Solution

The fourth proportional to 2,928.65, 4,393.20 and 848.69 is: 1,273.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.65 : 4,393.20 = 848.69 : x
  2. Step 2: Convert to fraction form
    2,928.65/4,393.20 = 848.69/x
  3. Step 3: Cross multiply
    2,928.65x = 4,393.20 × 848.69
  4. Step 4: Simplify right side
    2,928.65x = 3,728,446.12
  5. Step 5: Solve for x
    x = 3,728,446.12/2,928.65
  6. Step 6: Final answer
    x = 1,273.09

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.