Home / 3,946.39-5,445.99-2,153.86

Finding the Fourth Proportional to 3,946.39, 5,445.99 and 2,153.86

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Solution

The fourth proportional to 3,946.39, 5,445.99 and 2,153.86 is: 2,972.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.39 : 5,445.99 = 2,153.86 : x
  2. Step 2: Convert to fraction form
    3,946.39/5,445.99 = 2,153.86/x
  3. Step 3: Cross multiply
    3,946.39x = 5,445.99 × 2,153.86
  4. Step 4: Simplify right side
    3,946.39x = 11,729,900.02
  5. Step 5: Solve for x
    x = 11,729,900.02/3,946.39
  6. Step 6: Final answer
    x = 2,972.31

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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.