Home / 3,051.23-4,211.07-1,990.13

Finding the Fourth Proportional to 3,051.23, 4,211.07 and 1,990.13

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Solution

The fourth proportional to 3,051.23, 4,211.07 and 1,990.13 is: 2,746.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,051.23 : 4,211.07 = 1,990.13 : x
  2. Step 2: Convert to fraction form
    3,051.23/4,211.07 = 1,990.13/x
  3. Step 3: Cross multiply
    3,051.23x = 4,211.07 × 1,990.13
  4. Step 4: Simplify right side
    3,051.23x = 8,380,576.74
  5. Step 5: Solve for x
    x = 8,380,576.74/3,051.23
  6. Step 6: Final answer
    x = 2,746.62

Related Problems

Find fourth proportional to 1,525.62, 2,105.54 and 995.07
Half scale
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Double scale
Find fourth proportional to 3,052.23, 4,212.45 and 1,991.13
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.