Home / 6,438.44-8,889.18-4,425.20

Finding the Fourth Proportional to 6,438.44, 8,889.18 and 4,425.20

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Solution

The fourth proportional to 6,438.44, 8,889.18 and 4,425.20 is: 6,109.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438.44 : 8,889.18 = 4,425.20 : x
  2. Step 2: Convert to fraction form
    6,438.44/8,889.18 = 4,425.20/x
  3. Step 3: Cross multiply
    6,438.44x = 8,889.18 × 4,425.20
  4. Step 4: Simplify right side
    6,438.44x = 39,336,399.34
  5. Step 5: Solve for x
    x = 39,336,399.34/6,438.44
  6. Step 6: Final answer
    x = 6,109.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.