Home / 3,422.61-5,126.99-2,688.75

Finding the Fourth Proportional to 3,422.61, 5,126.99 and 2,688.75

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Solution

The fourth proportional to 3,422.61, 5,126.99 and 2,688.75 is: 4,027.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.61 : 5,126.99 = 2,688.75 : x
  2. Step 2: Convert to fraction form
    3,422.61/5,126.99 = 2,688.75/x
  3. Step 3: Cross multiply
    3,422.61x = 5,126.99 × 2,688.75
  4. Step 4: Simplify right side
    3,422.61x = 13,785,180.92
  5. Step 5: Solve for x
    x = 13,785,180.92/3,422.61
  6. Step 6: Final answer
    x = 4,027.68

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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.