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Finding the Fourth Proportional to 2,615.81, 3,923.60 and 884.45

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Solution

The fourth proportional to 2,615.81, 3,923.60 and 884.45 is: 1,326.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.81 : 3,923.60 = 884.45 : x
  2. Step 2: Convert to fraction form
    2,615.81/3,923.60 = 884.45/x
  3. Step 3: Cross multiply
    2,615.81x = 3,923.60 × 884.45
  4. Step 4: Simplify right side
    2,615.81x = 3,470,223.60
  5. Step 5: Solve for x
    x = 3,470,223.60/2,615.81
  6. Step 6: Final answer
    x = 1,326.63

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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.