Home / 8,220.19-11,340.68-5,235.49

Finding the Fourth Proportional to 8,220.19, 11,340.68 and 5,235.49

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Solution

The fourth proportional to 8,220.19, 11,340.68 and 5,235.49 is: 7,222.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.19 : 11,340.68 = 5,235.49 : x
  2. Step 2: Convert to fraction form
    8,220.19/11,340.68 = 5,235.49/x
  3. Step 3: Cross multiply
    8,220.19x = 11,340.68 × 5,235.49
  4. Step 4: Simplify right side
    8,220.19x = 59,373,990.56
  5. Step 5: Solve for x
    x = 59,373,990.56/8,220.19
  6. Step 6: Final answer
    x = 7,222.95

Related Problems

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Half scale
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Double scale
Find fourth proportional to 8,221.19, 11,342.05 and 5,236.49
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.