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Finding the Fourth Proportional to 2,858.87, 4,287.87 and 1,103.62

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Solution

The fourth proportional to 2,858.87, 4,287.87 and 1,103.62 is: 1,655.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.87 : 4,287.87 = 1,103.62 : x
  2. Step 2: Convert to fraction form
    2,858.87/4,287.87 = 1,103.62/x
  3. Step 3: Cross multiply
    2,858.87x = 4,287.87 × 1,103.62
  4. Step 4: Simplify right side
    2,858.87x = 4,732,173.57
  5. Step 5: Solve for x
    x = 4,732,173.57/2,858.87
  6. Step 6: Final answer
    x = 1,655.26

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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.