Home / 3,051.58-4,211.28-1,990.04

Finding the Fourth Proportional to 3,051.58, 4,211.28 and 1,990.04

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Solution

The fourth proportional to 3,051.58, 4,211.28 and 1,990.04 is: 2,746.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,051.58 : 4,211.28 = 1,990.04 : x
  2. Step 2: Convert to fraction form
    3,051.58/4,211.28 = 1,990.04/x
  3. Step 3: Cross multiply
    3,051.58x = 4,211.28 × 1,990.04
  4. Step 4: Simplify right side
    3,051.58x = 8,380,615.65
  5. Step 5: Solve for x
    x = 8,380,615.65/3,051.58
  6. Step 6: Final answer
    x = 2,746.32

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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.