Home / 3,878.28-5,350.86-2,551.50

Finding the Fourth Proportional to 3,878.28, 5,350.86 and 2,551.50

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Solution

The fourth proportional to 3,878.28, 5,350.86 and 2,551.50 is: 3,520.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.28 : 5,350.86 = 2,551.50 : x
  2. Step 2: Convert to fraction form
    3,878.28/5,350.86 = 2,551.50/x
  3. Step 3: Cross multiply
    3,878.28x = 5,350.86 × 2,551.50
  4. Step 4: Simplify right side
    3,878.28x = 13,652,719.29
  5. Step 5: Solve for x
    x = 13,652,719.29/3,878.28
  6. Step 6: Final answer
    x = 3,520.30

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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.