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Finding the Fourth Proportional to 5,827.94, 8,040 and 3,938.84

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Solution

The fourth proportional to 5,827.94, 8,040 and 3,938.84 is: 5,433.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,827.94 : 8,040 = 3,938.84 : x
  2. Step 2: Convert to fraction form
    5,827.94/8,040 = 3,938.84/x
  3. Step 3: Cross multiply
    5,827.94x = 8,040 × 3,938.84
  4. Step 4: Simplify right side
    5,827.94x = 31,668,233.40
  5. Step 5: Solve for x
    x = 31,668,233.40/5,827.94
  6. Step 6: Final answer
    x = 5,433.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.