Home / 8,581.68-12,872.75-2,738.28

Finding the Fourth Proportional to 8,581.68, 12,872.75 and 2,738.28

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Solution

The fourth proportional to 8,581.68, 12,872.75 and 2,738.28 is: 4,107.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,581.68 : 12,872.75 = 2,738.28 : x
  2. Step 2: Convert to fraction form
    8,581.68/12,872.75 = 2,738.28/x
  3. Step 3: Cross multiply
    8,581.68x = 12,872.75 × 2,738.28
  4. Step 4: Simplify right side
    8,581.68x = 35,249,228.45
  5. Step 5: Solve for x
    x = 35,249,228.45/8,581.68
  6. Step 6: Final answer
    x = 4,107.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.