Home / 7,418.80-11,130.36-3,517.84

Finding the Fourth Proportional to 7,418.80, 11,130.36 and 3,517.84

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Solution

The fourth proportional to 7,418.80, 11,130.36 and 3,517.84 is: 5,277.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,418.80 : 11,130.36 = 3,517.84 : x
  2. Step 2: Convert to fraction form
    7,418.80/11,130.36 = 3,517.84/x
  3. Step 3: Cross multiply
    7,418.80x = 11,130.36 × 3,517.84
  4. Step 4: Simplify right side
    7,418.80x = 39,154,825.62
  5. Step 5: Solve for x
    x = 39,154,825.62/7,418.80
  6. Step 6: Final answer
    x = 5,277.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.