Home / 8,431.37-11,635.67-4,847.49

Finding the Fourth Proportional to 8,431.37, 11,635.67 and 4,847.49

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Solution

The fourth proportional to 8,431.37, 11,635.67 and 4,847.49 is: 6,689.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.37 : 11,635.67 = 4,847.49 : x
  2. Step 2: Convert to fraction form
    8,431.37/11,635.67 = 4,847.49/x
  3. Step 3: Cross multiply
    8,431.37x = 11,635.67 × 4,847.49
  4. Step 4: Simplify right side
    8,431.37x = 56,403,778.82
  5. Step 5: Solve for x
    x = 56,403,778.82/8,431.37
  6. Step 6: Final answer
    x = 6,689.75

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Half scale
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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.