Home / 3,953.63-5,455.84-2,161.07

Finding the Fourth Proportional to 3,953.63, 5,455.84 and 2,161.07

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Solution

The fourth proportional to 3,953.63, 5,455.84 and 2,161.07 is: 2,982.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.63 : 5,455.84 = 2,161.07 : x
  2. Step 2: Convert to fraction form
    3,953.63/5,455.84 = 2,161.07/x
  3. Step 3: Cross multiply
    3,953.63x = 5,455.84 × 2,161.07
  4. Step 4: Simplify right side
    3,953.63x = 11,790,445.42
  5. Step 5: Solve for x
    x = 11,790,445.42/3,953.63
  6. Step 6: Final answer
    x = 2,982.18

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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.