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Finding the Fourth Proportional to 2,859.53, 4,289.28 and 1,878.54

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Solution

The fourth proportional to 2,859.53, 4,289.28 and 1,878.54 is: 2,817.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.53 : 4,289.28 = 1,878.54 : x
  2. Step 2: Convert to fraction form
    2,859.53/4,289.28 = 1,878.54/x
  3. Step 3: Cross multiply
    2,859.53x = 4,289.28 × 1,878.54
  4. Step 4: Simplify right side
    2,859.53x = 8,057,584.05
  5. Step 5: Solve for x
    x = 8,057,584.05/2,859.53
  6. Step 6: Final answer
    x = 2,817.80

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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.