Home / 3,489.06-4,812.42-2,311.74

Finding the Fourth Proportional to 3,489.06, 4,812.42 and 2,311.74

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Solution

The fourth proportional to 3,489.06, 4,812.42 and 2,311.74 is: 3,188.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.06 : 4,812.42 = 2,311.74 : x
  2. Step 2: Convert to fraction form
    3,489.06/4,812.42 = 2,311.74/x
  3. Step 3: Cross multiply
    3,489.06x = 4,812.42 × 2,311.74
  4. Step 4: Simplify right side
    3,489.06x = 11,125,063.81
  5. Step 5: Solve for x
    x = 11,125,063.81/3,489.06
  6. Step 6: Final answer
    x = 3,188.56

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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.