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Finding the Fourth Proportional to 3,474.78, 4,785.08 and 3,020.33

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Solution

The fourth proportional to 3,474.78, 4,785.08 and 3,020.33 is: 4,159.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,474.78 : 4,785.08 = 3,020.33 : x
  2. Step 2: Convert to fraction form
    3,474.78/4,785.08 = 3,020.33/x
  3. Step 3: Cross multiply
    3,474.78x = 4,785.08 × 3,020.33
  4. Step 4: Simplify right side
    3,474.78x = 14,452,520.68
  5. Step 5: Solve for x
    x = 14,452,520.68/3,474.78
  6. Step 6: Final answer
    x = 4,159.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.