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Finding the Fourth Proportional to 4,951.79, 7,423.44 and 1,831.21

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Solution

The fourth proportional to 4,951.79, 7,423.44 and 1,831.21 is: 2,745.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,951.79 : 7,423.44 = 1,831.21 : x
  2. Step 2: Convert to fraction form
    4,951.79/7,423.44 = 1,831.21/x
  3. Step 3: Cross multiply
    4,951.79x = 7,423.44 × 1,831.21
  4. Step 4: Simplify right side
    4,951.79x = 13,593,879.79
  5. Step 5: Solve for x
    x = 13,593,879.79/4,951.79
  6. Step 6: Final answer
    x = 2,745.25

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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.