Home / 3,941.34-5,439.06-2,172.90

Finding the Fourth Proportional to 3,941.34, 5,439.06 and 2,172.90

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Solution

The fourth proportional to 3,941.34, 5,439.06 and 2,172.90 is: 2,998.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,941.34 : 5,439.06 = 2,172.90 : x
  2. Step 2: Convert to fraction form
    3,941.34/5,439.06 = 2,172.90/x
  3. Step 3: Cross multiply
    3,941.34x = 5,439.06 × 2,172.90
  4. Step 4: Simplify right side
    3,941.34x = 11,818,533.47
  5. Step 5: Solve for x
    x = 11,818,533.47/3,941.34
  6. Step 6: Final answer
    x = 2,998.61

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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.