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Finding the Fourth Proportional to 6,406.04, 9,609.21 and 1,963.80

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Solution

The fourth proportional to 6,406.04, 9,609.21 and 1,963.80 is: 2,945.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,406.04 : 9,609.21 = 1,963.80 : x
  2. Step 2: Convert to fraction form
    6,406.04/9,609.21 = 1,963.80/x
  3. Step 3: Cross multiply
    6,406.04x = 9,609.21 × 1,963.80
  4. Step 4: Simplify right side
    6,406.04x = 18,870,566.60
  5. Step 5: Solve for x
    x = 18,870,566.60/6,406.04
  6. Step 6: Final answer
    x = 2,945.75

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Similar ratio
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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.