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Finding the Fourth Proportional to 2,615.76, 3,923.40 and 884.28

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Solution

The fourth proportional to 2,615.76, 3,923.40 and 884.28 is: 1,326.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.76 : 3,923.40 = 884.28 : x
  2. Step 2: Convert to fraction form
    2,615.76/3,923.40 = 884.28/x
  3. Step 3: Cross multiply
    2,615.76x = 3,923.40 × 884.28
  4. Step 4: Simplify right side
    2,615.76x = 3,469,384.15
  5. Step 5: Solve for x
    x = 3,469,384.15/2,615.76
  6. Step 6: Final answer
    x = 1,326.34

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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.