Home / 3,539.99-4,880.60-2,278.79

Finding the Fourth Proportional to 3,539.99, 4,880.60 and 2,278.79

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Solution

The fourth proportional to 3,539.99, 4,880.60 and 2,278.79 is: 3,141.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,539.99 : 4,880.60 = 2,278.79 : x
  2. Step 2: Convert to fraction form
    3,539.99/4,880.60 = 2,278.79/x
  3. Step 3: Cross multiply
    3,539.99x = 4,880.60 × 2,278.79
  4. Step 4: Simplify right side
    3,539.99x = 11,121,851.08
  5. Step 5: Solve for x
    x = 11,121,851.08/3,539.99
  6. Step 6: Final answer
    x = 3,141.77

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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.