Home / 4,319.27-6,479.60-2,128.22

Finding the Fourth Proportional to 4,319.27, 6,479.60 and 2,128.22

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Solution

The fourth proportional to 4,319.27, 6,479.60 and 2,128.22 is: 3,192.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,319.27 : 6,479.60 = 2,128.22 : x
  2. Step 2: Convert to fraction form
    4,319.27/6,479.60 = 2,128.22/x
  3. Step 3: Cross multiply
    4,319.27x = 6,479.60 × 2,128.22
  4. Step 4: Simplify right side
    4,319.27x = 13,790,014.31
  5. Step 5: Solve for x
    x = 13,790,014.31/4,319.27
  6. Step 6: Final answer
    x = 3,192.67

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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.