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Finding the Fourth Proportional to 6,263.86, 8,640.33 and 4,139.41

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Solution

The fourth proportional to 6,263.86, 8,640.33 and 4,139.41 is: 5,709.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,263.86 : 8,640.33 = 4,139.41 : x
  2. Step 2: Convert to fraction form
    6,263.86/8,640.33 = 4,139.41/x
  3. Step 3: Cross multiply
    6,263.86x = 8,640.33 × 4,139.41
  4. Step 4: Simplify right side
    6,263.86x = 35,765,868.41
  5. Step 5: Solve for x
    x = 35,765,868.41/6,263.86
  6. Step 6: Final answer
    x = 5,709.88

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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.