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Finding the Fourth Proportional to 3,998.77, 5,518.19 and 2,297.23

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Solution

The fourth proportional to 3,998.77, 5,518.19 and 2,297.23 is: 3,170.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.77 : 5,518.19 = 2,297.23 : x
  2. Step 2: Convert to fraction form
    3,998.77/5,518.19 = 2,297.23/x
  3. Step 3: Cross multiply
    3,998.77x = 5,518.19 × 2,297.23
  4. Step 4: Simplify right side
    3,998.77x = 12,676,543.56
  5. Step 5: Solve for x
    x = 12,676,543.56/3,998.77
  6. Step 6: Final answer
    x = 3,170.11

Related Problems

Find fourth proportional to 1,999.38, 2,759.10 and 1,148.61
Half scale
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Double scale
Find fourth proportional to 3,999.77, 5,519.57 and 2,298.23
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.