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Finding the Fourth Proportional to 3,167.36, 4,751.12 and 858.88

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Solution

The fourth proportional to 3,167.36, 4,751.12 and 858.88 is: 1,288.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,167.36 : 4,751.12 = 858.88 : x
  2. Step 2: Convert to fraction form
    3,167.36/4,751.12 = 858.88/x
  3. Step 3: Cross multiply
    3,167.36x = 4,751.12 × 858.88
  4. Step 4: Simplify right side
    3,167.36x = 4,080,641.95
  5. Step 5: Solve for x
    x = 4,080,641.95/3,167.36
  6. Step 6: Final answer
    x = 1,288.34

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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.