Home / 8,243.21-11,379.58-4,705.74

Finding the Fourth Proportional to 8,243.21, 11,379.58 and 4,705.74

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Solution

The fourth proportional to 8,243.21, 11,379.58 and 4,705.74 is: 6,496.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,243.21 : 11,379.58 = 4,705.74 : x
  2. Step 2: Convert to fraction form
    8,243.21/11,379.58 = 4,705.74/x
  3. Step 3: Cross multiply
    8,243.21x = 11,379.58 × 4,705.74
  4. Step 4: Simplify right side
    8,243.21x = 53,549,321.26
  5. Step 5: Solve for x
    x = 53,549,321.26/8,243.21
  6. Step 6: Final answer
    x = 6,496.17

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Half scale
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Find fourth proportional to 8,244.21, 11,380.96 and 4,706.74
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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.