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Finding the Fourth Proportional to 5,479.38, 8,219.06 and 1,831.38

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Solution

The fourth proportional to 5,479.38, 8,219.06 and 1,831.38 is: 2,747.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.38 : 8,219.06 = 1,831.38 : x
  2. Step 2: Convert to fraction form
    5,479.38/8,219.06 = 1,831.38/x
  3. Step 3: Cross multiply
    5,479.38x = 8,219.06 × 1,831.38
  4. Step 4: Simplify right side
    5,479.38x = 15,052,222.10
  5. Step 5: Solve for x
    x = 15,052,222.10/5,479.38
  6. Step 6: Final answer
    x = 2,747.07

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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.