Home / 3,639.84-5,022.72-2,855.76

Finding the Fourth Proportional to 3,639.84, 5,022.72 and 2,855.76

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Solution

The fourth proportional to 3,639.84, 5,022.72 and 2,855.76 is: 3,940.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.84 : 5,022.72 = 2,855.76 : x
  2. Step 2: Convert to fraction form
    3,639.84/5,022.72 = 2,855.76/x
  3. Step 3: Cross multiply
    3,639.84x = 5,022.72 × 2,855.76
  4. Step 4: Simplify right side
    3,639.84x = 14,343,682.87
  5. Step 5: Solve for x
    x = 14,343,682.87/3,639.84
  6. Step 6: Final answer
    x = 3,940.75

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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.