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Finding the Fourth Proportional to 2,615.32, 3,923.04 and 667.54

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Solution

The fourth proportional to 2,615.32, 3,923.04 and 667.54 is: 1,001.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.32 : 3,923.04 = 667.54 : x
  2. Step 2: Convert to fraction form
    2,615.32/3,923.04 = 667.54/x
  3. Step 3: Cross multiply
    2,615.32x = 3,923.04 × 667.54
  4. Step 4: Simplify right side
    2,615.32x = 2,618,786.12
  5. Step 5: Solve for x
    x = 2,618,786.12/2,615.32
  6. Step 6: Final answer
    x = 1,001.33

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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.