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Finding the Fourth Proportional to 4,389.81, 6,585.02 and 2,169.81

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Solution

The fourth proportional to 4,389.81, 6,585.02 and 2,169.81 is: 3,254.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,389.81 : 6,585.02 = 2,169.81 : x
  2. Step 2: Convert to fraction form
    4,389.81/6,585.02 = 2,169.81/x
  3. Step 3: Cross multiply
    4,389.81x = 6,585.02 × 2,169.81
  4. Step 4: Simplify right side
    4,389.81x = 14,288,242.25
  5. Step 5: Solve for x
    x = 14,288,242.25/4,389.81
  6. Step 6: Final answer
    x = 3,254.87

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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.