Home / 4,005.90-5,520.34-2,884.72

Finding the Fourth Proportional to 4,005.90, 5,520.34 and 2,884.72

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Solution

The fourth proportional to 4,005.90, 5,520.34 and 2,884.72 is: 3,975.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,005.90 : 5,520.34 = 2,884.72 : x
  2. Step 2: Convert to fraction form
    4,005.90/5,520.34 = 2,884.72/x
  3. Step 3: Cross multiply
    4,005.90x = 5,520.34 × 2,884.72
  4. Step 4: Simplify right side
    4,005.90x = 15,924,634.58
  5. Step 5: Solve for x
    x = 15,924,634.58/4,005.90
  6. Step 6: Final answer
    x = 3,975.30

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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.