Home / 3,211.23-4,426.20-2,148.62

Finding the Fourth Proportional to 3,211.23, 4,426.20 and 2,148.62

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Solution

The fourth proportional to 3,211.23, 4,426.20 and 2,148.62 is: 2,961.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.23 : 4,426.20 = 2,148.62 : x
  2. Step 2: Convert to fraction form
    3,211.23/4,426.20 = 2,148.62/x
  3. Step 3: Cross multiply
    3,211.23x = 4,426.20 × 2,148.62
  4. Step 4: Simplify right side
    3,211.23x = 9,510,209.14
  5. Step 5: Solve for x
    x = 9,510,209.14/3,211.23
  6. Step 6: Final answer
    x = 2,961.55

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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.