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Finding the Fourth Proportional to 3,164.42, 4,746.08 and 855.38

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Solution

The fourth proportional to 3,164.42, 4,746.08 and 855.38 is: 1,282.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,164.42 : 4,746.08 = 855.38 : x
  2. Step 2: Convert to fraction form
    3,164.42/4,746.08 = 855.38/x
  3. Step 3: Cross multiply
    3,164.42x = 4,746.08 × 855.38
  4. Step 4: Simplify right side
    3,164.42x = 4,059,673.90
  5. Step 5: Solve for x
    x = 4,059,673.90/3,164.42
  6. Step 6: Final answer
    x = 1,282.91

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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.