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Finding the Fourth Proportional to 6,381.43, 8,806.97 and 3,864.16

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Solution

The fourth proportional to 6,381.43, 8,806.97 and 3,864.16 is: 5,332.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,381.43 : 8,806.97 = 3,864.16 : x
  2. Step 2: Convert to fraction form
    6,381.43/8,806.97 = 3,864.16/x
  3. Step 3: Cross multiply
    6,381.43x = 8,806.97 × 3,864.16
  4. Step 4: Simplify right side
    6,381.43x = 34,031,477.84
  5. Step 5: Solve for x
    x = 34,031,477.84/6,381.43
  6. Step 6: Final answer
    x = 5,332.90

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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.