Home / 3,539.75-4,879.58-2,280.55

Finding the Fourth Proportional to 3,539.75, 4,879.58 and 2,280.55

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Solution

The fourth proportional to 3,539.75, 4,879.58 and 2,280.55 is: 3,143.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,539.75 : 4,879.58 = 2,280.55 : x
  2. Step 2: Convert to fraction form
    3,539.75/4,879.58 = 2,280.55/x
  3. Step 3: Cross multiply
    3,539.75x = 4,879.58 × 2,280.55
  4. Step 4: Simplify right side
    3,539.75x = 11,128,126.17
  5. Step 5: Solve for x
    x = 11,128,126.17/3,539.75
  6. Step 6: Final answer
    x = 3,143.76

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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.