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Finding the Fourth Proportional to 2,326.69, 3,489.12 and 939.77

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Solution

The fourth proportional to 2,326.69, 3,489.12 and 939.77 is: 1,409.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,326.69 : 3,489.12 = 939.77 : x
  2. Step 2: Convert to fraction form
    2,326.69/3,489.12 = 939.77/x
  3. Step 3: Cross multiply
    2,326.69x = 3,489.12 × 939.77
  4. Step 4: Simplify right side
    2,326.69x = 3,278,952.86
  5. Step 5: Solve for x
    x = 3,278,952.86/2,326.69
  6. Step 6: Final answer
    x = 1,409.28

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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.