Home / 3,485.46-4,812.21-2,161.11

Finding the Fourth Proportional to 3,485.46, 4,812.21 and 2,161.11

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Solution

The fourth proportional to 3,485.46, 4,812.21 and 2,161.11 is: 2,983.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.46 : 4,812.21 = 2,161.11 : x
  2. Step 2: Convert to fraction form
    3,485.46/4,812.21 = 2,161.11/x
  3. Step 3: Cross multiply
    3,485.46x = 4,812.21 × 2,161.11
  4. Step 4: Simplify right side
    3,485.46x = 10,399,715.15
  5. Step 5: Solve for x
    x = 10,399,715.15/3,485.46
  6. Step 6: Final answer
    x = 2,983.74

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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.