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Finding the Fourth Proportional to 6,386.99, 8,814.11 and 3,733.88

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Solution

The fourth proportional to 6,386.99, 8,814.11 and 3,733.88 is: 5,152.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.99 : 8,814.11 = 3,733.88 : x
  2. Step 2: Convert to fraction form
    6,386.99/8,814.11 = 3,733.88/x
  3. Step 3: Cross multiply
    6,386.99x = 8,814.11 × 3,733.88
  4. Step 4: Simplify right side
    6,386.99x = 32,910,766.31
  5. Step 5: Solve for x
    x = 32,910,766.31/6,386.99
  6. Step 6: Final answer
    x = 5,152.79

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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.