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Finding the Fourth Proportional to 2,831.85, 4,247.78 and 884.06

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Solution

The fourth proportional to 2,831.85, 4,247.78 and 884.06 is: 1,326.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.85 : 4,247.78 = 884.06 : x
  2. Step 2: Convert to fraction form
    2,831.85/4,247.78 = 884.06/x
  3. Step 3: Cross multiply
    2,831.85x = 4,247.78 × 884.06
  4. Step 4: Simplify right side
    2,831.85x = 3,755,266.73
  5. Step 5: Solve for x
    x = 3,755,266.73/2,831.85
  6. Step 6: Final answer
    x = 1,326.08

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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.