Home / 3,936.55-5,429.58-2,675.40

Finding the Fourth Proportional to 3,936.55, 5,429.58 and 2,675.40

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Solution

The fourth proportional to 3,936.55, 5,429.58 and 2,675.40 is: 3,690.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.55 : 5,429.58 = 2,675.40 : x
  2. Step 2: Convert to fraction form
    3,936.55/5,429.58 = 2,675.40/x
  3. Step 3: Cross multiply
    3,936.55x = 5,429.58 × 2,675.40
  4. Step 4: Simplify right side
    3,936.55x = 14,526,298.33
  5. Step 5: Solve for x
    x = 14,526,298.33/3,936.55
  6. Step 6: Final answer
    x = 3,690.11

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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.