Home / 2,120.46-2,926.22-1,188.96

Finding the Fourth Proportional to 2,120.46, 2,926.22 and 1,188.96

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Solution

The fourth proportional to 2,120.46, 2,926.22 and 1,188.96 is: 1,640.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.46 : 2,926.22 = 1,188.96 : x
  2. Step 2: Convert to fraction form
    2,120.46/2,926.22 = 1,188.96/x
  3. Step 3: Cross multiply
    2,120.46x = 2,926.22 × 1,188.96
  4. Step 4: Simplify right side
    2,120.46x = 3,479,152.59
  5. Step 5: Solve for x
    x = 3,479,152.59/2,120.46
  6. Step 6: Final answer
    x = 1,640.75

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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.