Home / 3,925.97-5,417.79-2,157.55

Finding the Fourth Proportional to 3,925.97, 5,417.79 and 2,157.55

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Solution

The fourth proportional to 3,925.97, 5,417.79 and 2,157.55 is: 2,977.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.97 : 5,417.79 = 2,157.55 : x
  2. Step 2: Convert to fraction form
    3,925.97/5,417.79 = 2,157.55/x
  3. Step 3: Cross multiply
    3,925.97x = 5,417.79 × 2,157.55
  4. Step 4: Simplify right side
    3,925.97x = 11,689,114.94
  5. Step 5: Solve for x
    x = 11,689,114.94/3,925.97
  6. Step 6: Final answer
    x = 2,977.39

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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.