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Finding the Fourth Proportional to 4,905.76, 7,360.56 and 1,828

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Solution

The fourth proportional to 4,905.76, 7,360.56 and 1,828 is: 2,742.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905.76 : 7,360.56 = 1,828 : x
  2. Step 2: Convert to fraction form
    4,905.76/7,360.56 = 1,828/x
  3. Step 3: Cross multiply
    4,905.76x = 7,360.56 × 1,828
  4. Step 4: Simplify right side
    4,905.76x = 13,455,103.68
  5. Step 5: Solve for x
    x = 13,455,103.68/4,905.76
  6. Step 6: Final answer
    x = 2,742.72

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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.