Home / 6,429.12-9,643.68-4,122.24

Finding the Fourth Proportional to 6,429.12, 9,643.68 and 4,122.24

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Solution

The fourth proportional to 6,429.12, 9,643.68 and 4,122.24 is: 6,183.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.12 : 9,643.68 = 4,122.24 : x
  2. Step 2: Convert to fraction form
    6,429.12/9,643.68 = 4,122.24/x
  3. Step 3: Cross multiply
    6,429.12x = 9,643.68 × 4,122.24
  4. Step 4: Simplify right side
    6,429.12x = 39,753,563.44
  5. Step 5: Solve for x
    x = 39,753,563.44/6,429.12
  6. Step 6: Final answer
    x = 6,183.36

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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.