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Finding the Fourth Proportional to 4,406.55, 6,609.78 and 1,328.55

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Solution

The fourth proportional to 4,406.55, 6,609.78 and 1,328.55 is: 1,992.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,406.55 : 6,609.78 = 1,328.55 : x
  2. Step 2: Convert to fraction form
    4,406.55/6,609.78 = 1,328.55/x
  3. Step 3: Cross multiply
    4,406.55x = 6,609.78 × 1,328.55
  4. Step 4: Simplify right side
    4,406.55x = 8,781,423.22
  5. Step 5: Solve for x
    x = 8,781,423.22/4,406.55
  6. Step 6: Final answer
    x = 1,992.81

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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.