Home / 5,520.64-7,618.56-3,002.80

Finding the Fourth Proportional to 5,520.64, 7,618.56 and 3,002.80

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Solution

The fourth proportional to 5,520.64, 7,618.56 and 3,002.80 is: 4,143.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,520.64 : 7,618.56 = 3,002.80 : x
  2. Step 2: Convert to fraction form
    5,520.64/7,618.56 = 3,002.80/x
  3. Step 3: Cross multiply
    5,520.64x = 7,618.56 × 3,002.80
  4. Step 4: Simplify right side
    5,520.64x = 22,876,993.52
  5. Step 5: Solve for x
    x = 22,876,993.52/5,520.64
  6. Step 6: Final answer
    x = 4,143.90

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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.