Home / 3,960.88-5,465.40-2,636.56

Finding the Fourth Proportional to 3,960.88, 5,465.40 and 2,636.56

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Solution

The fourth proportional to 3,960.88, 5,465.40 and 2,636.56 is: 3,638.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.88 : 5,465.40 = 2,636.56 : x
  2. Step 2: Convert to fraction form
    3,960.88/5,465.40 = 2,636.56/x
  3. Step 3: Cross multiply
    3,960.88x = 5,465.40 × 2,636.56
  4. Step 4: Simplify right side
    3,960.88x = 14,409,855.02
  5. Step 5: Solve for x
    x = 14,409,855.02/3,960.88
  6. Step 6: Final answer
    x = 3,638.04

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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.