Home / 3,926.10-5,417.98-2,157.73

Finding the Fourth Proportional to 3,926.10, 5,417.98 and 2,157.73

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Solution

The fourth proportional to 3,926.10, 5,417.98 and 2,157.73 is: 2,977.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.10 : 5,417.98 = 2,157.73 : x
  2. Step 2: Convert to fraction form
    3,926.10/5,417.98 = 2,157.73/x
  3. Step 3: Cross multiply
    3,926.10x = 5,417.98 × 2,157.73
  4. Step 4: Simplify right side
    3,926.10x = 11,690,551.53
  5. Step 5: Solve for x
    x = 11,690,551.53/3,926.10
  6. Step 6: Final answer
    x = 2,977.65

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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.