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Finding the Fourth Proportional to 6,235.81, 8,605.21 and 3,716.63

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Solution

The fourth proportional to 6,235.81, 8,605.21 and 3,716.63 is: 5,128.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,235.81 : 8,605.21 = 3,716.63 : x
  2. Step 2: Convert to fraction form
    6,235.81/8,605.21 = 3,716.63/x
  3. Step 3: Cross multiply
    6,235.81x = 8,605.21 × 3,716.63
  4. Step 4: Simplify right side
    6,235.81x = 31,982,333.91
  5. Step 5: Solve for x
    x = 31,982,333.91/6,235.81
  6. Step 6: Final answer
    x = 5,128.82

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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.