Home / 3,880.80-5,355.52-2,308.92

Finding the Fourth Proportional to 3,880.80, 5,355.52 and 2,308.92

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Solution

The fourth proportional to 3,880.80, 5,355.52 and 2,308.92 is: 3,186.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.80 : 5,355.52 = 2,308.92 : x
  2. Step 2: Convert to fraction form
    3,880.80/5,355.52 = 2,308.92/x
  3. Step 3: Cross multiply
    3,880.80x = 5,355.52 × 2,308.92
  4. Step 4: Simplify right side
    3,880.80x = 12,365,467.24
  5. Step 5: Solve for x
    x = 12,365,467.24/3,880.80
  6. Step 6: Final answer
    x = 3,186.32

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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.