Home / 3,878.69-5,355.11-2,554.64

Finding the Fourth Proportional to 3,878.69, 5,355.11 and 2,554.64

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Solution

The fourth proportional to 3,878.69, 5,355.11 and 2,554.64 is: 3,527.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.69 : 5,355.11 = 2,554.64 : x
  2. Step 2: Convert to fraction form
    3,878.69/5,355.11 = 2,554.64/x
  3. Step 3: Cross multiply
    3,878.69x = 5,355.11 × 2,554.64
  4. Step 4: Simplify right side
    3,878.69x = 13,680,377.90
  5. Step 5: Solve for x
    x = 13,680,377.90/3,878.69
  6. Step 6: Final answer
    x = 3,527.07

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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.