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Finding the Fourth Proportional to 6,391.68, 8,824.85 and 4,002.59

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Solution

The fourth proportional to 6,391.68, 8,824.85 and 4,002.59 is: 5,526.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391.68 : 8,824.85 = 4,002.59 : x
  2. Step 2: Convert to fraction form
    6,391.68/8,824.85 = 4,002.59/x
  3. Step 3: Cross multiply
    6,391.68x = 8,824.85 × 4,002.59
  4. Step 4: Simplify right side
    6,391.68x = 35,322,192.22
  5. Step 5: Solve for x
    x = 35,322,192.22/6,391.68
  6. Step 6: Final answer
    x = 5,526.28

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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.