Home / 3,939.79-5,909.68-1,018.08

Finding the Fourth Proportional to 3,939.79, 5,909.68 and 1,018.08

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Solution

The fourth proportional to 3,939.79, 5,909.68 and 1,018.08 is: 1,527.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.79 : 5,909.68 = 1,018.08 : x
  2. Step 2: Convert to fraction form
    3,939.79/5,909.68 = 1,018.08/x
  3. Step 3: Cross multiply
    3,939.79x = 5,909.68 × 1,018.08
  4. Step 4: Simplify right side
    3,939.79x = 6,016,527.01
  5. Step 5: Solve for x
    x = 6,016,527.01/3,939.79
  6. Step 6: Final answer
    x = 1,527.12

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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.