Home / 6,455.20-9,682.80-3,863.20

Finding the Fourth Proportional to 6,455.20, 9,682.80 and 3,863.20

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Solution

The fourth proportional to 6,455.20, 9,682.80 and 3,863.20 is: 5,794.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,455.20 : 9,682.80 = 3,863.20 : x
  2. Step 2: Convert to fraction form
    6,455.20/9,682.80 = 3,863.20/x
  3. Step 3: Cross multiply
    6,455.20x = 9,682.80 × 3,863.20
  4. Step 4: Simplify right side
    6,455.20x = 37,406,592.96
  5. Step 5: Solve for x
    x = 37,406,592.96/6,455.20
  6. Step 6: Final answer
    x = 5,794.80

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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.