Home / 3,926.08-5,417.98-2,157.80

Finding the Fourth Proportional to 3,926.08, 5,417.98 and 2,157.80

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Solution

The fourth proportional to 3,926.08, 5,417.98 and 2,157.80 is: 2,977.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.08 : 5,417.98 = 2,157.80 : x
  2. Step 2: Convert to fraction form
    3,926.08/5,417.98 = 2,157.80/x
  3. Step 3: Cross multiply
    3,926.08x = 5,417.98 × 2,157.80
  4. Step 4: Simplify right side
    3,926.08x = 11,690,884.76
  5. Step 5: Solve for x
    x = 11,690,884.76/3,926.08
  6. Step 6: Final answer
    x = 2,977.75

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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.