Home / 3,880.82-5,354.20-2,555.87

Finding the Fourth Proportional to 3,880.82, 5,354.20 and 2,555.87

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Solution

The fourth proportional to 3,880.82, 5,354.20 and 2,555.87 is: 3,526.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.82 : 5,354.20 = 2,555.87 : x
  2. Step 2: Convert to fraction form
    3,880.82/5,354.20 = 2,555.87/x
  3. Step 3: Cross multiply
    3,880.82x = 5,354.20 × 2,555.87
  4. Step 4: Simplify right side
    3,880.82x = 13,684,639.15
  5. Step 5: Solve for x
    x = 13,684,639.15/3,880.82
  6. Step 6: Final answer
    x = 3,526.22

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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.