Home / 4,128.32-6,189.96-2,831.60

Finding the Fourth Proportional to 4,128.32, 6,189.96 and 2,831.60

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Solution

The fourth proportional to 4,128.32, 6,189.96 and 2,831.60 is: 4,245.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.32 : 6,189.96 = 2,831.60 : x
  2. Step 2: Convert to fraction form
    4,128.32/6,189.96 = 2,831.60/x
  3. Step 3: Cross multiply
    4,128.32x = 6,189.96 × 2,831.60
  4. Step 4: Simplify right side
    4,128.32x = 17,527,490.74
  5. Step 5: Solve for x
    x = 17,527,490.74/4,128.32
  6. Step 6: Final answer
    x = 4,245.67

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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.