Home / 4,990.92-6,886.20-3,220.44

Finding the Fourth Proportional to 4,990.92, 6,886.20 and 3,220.44

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Solution

The fourth proportional to 4,990.92, 6,886.20 and 3,220.44 is: 4,443.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.92 : 6,886.20 = 3,220.44 : x
  2. Step 2: Convert to fraction form
    4,990.92/6,886.20 = 3,220.44/x
  3. Step 3: Cross multiply
    4,990.92x = 6,886.20 × 3,220.44
  4. Step 4: Simplify right side
    4,990.92x = 22,176,593.93
  5. Step 5: Solve for x
    x = 22,176,593.93/4,990.92
  6. Step 6: Final answer
    x = 4,443.39

Related Problems

Find fourth proportional to 2,495.46, 3,443.10 and 1,610.22
Half scale
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Double scale
Find fourth proportional to 4,991.92, 6,887.58 and 3,221.44
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.