Home / 3,941.80-5,439.52-2,173.40

Finding the Fourth Proportional to 3,941.80, 5,439.52 and 2,173.40

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Solution

The fourth proportional to 3,941.80, 5,439.52 and 2,173.40 is: 2,999.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,941.80 : 5,439.52 = 2,173.40 : x
  2. Step 2: Convert to fraction form
    3,941.80/5,439.52 = 2,173.40/x
  3. Step 3: Cross multiply
    3,941.80x = 5,439.52 × 2,173.40
  4. Step 4: Simplify right side
    3,941.80x = 11,822,252.77
  5. Step 5: Solve for x
    x = 11,822,252.77/3,941.80
  6. Step 6: Final answer
    x = 2,999.20

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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.