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Finding the Fourth Proportional to 3,606.81, 5,409.11 and 1,526.79

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Solution

The fourth proportional to 3,606.81, 5,409.11 and 1,526.79 is: 2,289.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,606.81 : 5,409.11 = 1,526.79 : x
  2. Step 2: Convert to fraction form
    3,606.81/5,409.11 = 1,526.79/x
  3. Step 3: Cross multiply
    3,606.81x = 5,409.11 × 1,526.79
  4. Step 4: Simplify right side
    3,606.81x = 8,258,567.42
  5. Step 5: Solve for x
    x = 8,258,567.42/3,606.81
  6. Step 6: Final answer
    x = 2,289.72

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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.