Home / 2,619.46-3,929.19-2,211.22

Finding the Fourth Proportional to 2,619.46, 3,929.19 and 2,211.22

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Solution

The fourth proportional to 2,619.46, 3,929.19 and 2,211.22 is: 3,316.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.46 : 3,929.19 = 2,211.22 : x
  2. Step 2: Convert to fraction form
    2,619.46/3,929.19 = 2,211.22/x
  3. Step 3: Cross multiply
    2,619.46x = 3,929.19 × 2,211.22
  4. Step 4: Simplify right side
    2,619.46x = 8,688,303.51
  5. Step 5: Solve for x
    x = 8,688,303.51/2,619.46
  6. Step 6: Final answer
    x = 3,316.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.