Home / 3,925.97-5,417.84-2,157.69

Finding the Fourth Proportional to 3,925.97, 5,417.84 and 2,157.69

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Solution

The fourth proportional to 3,925.97, 5,417.84 and 2,157.69 is: 2,977.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.97 : 5,417.84 = 2,157.69 : x
  2. Step 2: Convert to fraction form
    3,925.97/5,417.84 = 2,157.69/x
  3. Step 3: Cross multiply
    3,925.97x = 5,417.84 × 2,157.69
  4. Step 4: Simplify right side
    3,925.97x = 11,690,002.29
  5. Step 5: Solve for x
    x = 11,690,002.29/3,925.97
  6. Step 6: Final answer
    x = 2,977.61

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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.