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Finding the Fourth Proportional to 2,292.69, 3,438.33 and 831.49

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Solution

The fourth proportional to 2,292.69, 3,438.33 and 831.49 is: 1,246.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,292.69 : 3,438.33 = 831.49 : x
  2. Step 2: Convert to fraction form
    2,292.69/3,438.33 = 831.49/x
  3. Step 3: Cross multiply
    2,292.69x = 3,438.33 × 831.49
  4. Step 4: Simplify right side
    2,292.69x = 2,858,937.01
  5. Step 5: Solve for x
    x = 2,858,937.01/2,292.69
  6. Step 6: Final answer
    x = 1,246.98

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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.