Home / 8,221.23-11,342.57-4,635.74

Finding the Fourth Proportional to 8,221.23, 11,342.57 and 4,635.74

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Solution

The fourth proportional to 8,221.23, 11,342.57 and 4,635.74 is: 6,395.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221.23 : 11,342.57 = 4,635.74 : x
  2. Step 2: Convert to fraction form
    8,221.23/11,342.57 = 4,635.74/x
  3. Step 3: Cross multiply
    8,221.23x = 11,342.57 × 4,635.74
  4. Step 4: Simplify right side
    8,221.23x = 52,581,205.45
  5. Step 5: Solve for x
    x = 52,581,205.45/8,221.23
  6. Step 6: Final answer
    x = 6,395.78

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Half scale
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Double scale
Find fourth proportional to 8,222.23, 11,343.95 and 4,636.74
Similar ratio
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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.