Home / 6,420.72-9,630.06-3,954.24

Finding the Fourth Proportional to 6,420.72, 9,630.06 and 3,954.24

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Solution

The fourth proportional to 6,420.72, 9,630.06 and 3,954.24 is: 5,930.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.72 : 9,630.06 = 3,954.24 : x
  2. Step 2: Convert to fraction form
    6,420.72/9,630.06 = 3,954.24/x
  3. Step 3: Cross multiply
    6,420.72x = 9,630.06 × 3,954.24
  4. Step 4: Simplify right side
    6,420.72x = 38,079,568.45
  5. Step 5: Solve for x
    x = 38,079,568.45/6,420.72
  6. Step 6: Final answer
    x = 5,930.73

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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.