Home / 5,135.80-7,080.98-4,286.28

Finding the Fourth Proportional to 5,135.80, 7,080.98 and 4,286.28

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Solution

The fourth proportional to 5,135.80, 7,080.98 and 4,286.28 is: 5,909.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.80 : 7,080.98 = 4,286.28 : x
  2. Step 2: Convert to fraction form
    5,135.80/7,080.98 = 4,286.28/x
  3. Step 3: Cross multiply
    5,135.80x = 7,080.98 × 4,286.28
  4. Step 4: Simplify right side
    5,135.80x = 30,351,073.67
  5. Step 5: Solve for x
    x = 30,351,073.67/5,135.80
  6. Step 6: Final answer
    x = 5,909.71

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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.