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Finding the Fourth Proportional to 3,165.58, 4,748.38 and 825.58

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Solution

The fourth proportional to 3,165.58, 4,748.38 and 825.58 is: 1,238.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,165.58 : 4,748.38 = 825.58 : x
  2. Step 2: Convert to fraction form
    3,165.58/4,748.38 = 825.58/x
  3. Step 3: Cross multiply
    3,165.58x = 4,748.38 × 825.58
  4. Step 4: Simplify right side
    3,165.58x = 3,920,170.27
  5. Step 5: Solve for x
    x = 3,920,170.27/3,165.58
  6. Step 6: Final answer
    x = 1,238.37

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1.5x scale

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.