Home / 6,429.12-9,636.60-4,205.28

Finding the Fourth Proportional to 6,429.12, 9,636.60 and 4,205.28

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Solution

The fourth proportional to 6,429.12, 9,636.60 and 4,205.28 is: 6,303.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.12 : 9,636.60 = 4,205.28 : x
  2. Step 2: Convert to fraction form
    6,429.12/9,636.60 = 4,205.28/x
  3. Step 3: Cross multiply
    6,429.12x = 9,636.60 × 4,205.28
  4. Step 4: Simplify right side
    6,429.12x = 40,524,601.25
  5. Step 5: Solve for x
    x = 40,524,601.25/6,429.12
  6. Step 6: Final answer
    x = 6,303.29

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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.