Home / 6,429.12-9,643.80-2,968.80

Finding the Fourth Proportional to 6,429.12, 9,643.80 and 2,968.80

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Solution

The fourth proportional to 6,429.12, 9,643.80 and 2,968.80 is: 4,453.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.12 : 9,643.80 = 2,968.80 : x
  2. Step 2: Convert to fraction form
    6,429.12/9,643.80 = 2,968.80/x
  3. Step 3: Cross multiply
    6,429.12x = 9,643.80 × 2,968.80
  4. Step 4: Simplify right side
    6,429.12x = 28,630,513.44
  5. Step 5: Solve for x
    x = 28,630,513.44/6,429.12
  6. Step 6: Final answer
    x = 4,453.26

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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.