Home / 5,087.80-7,631.70-2,621.80

Finding the Fourth Proportional to 5,087.80, 7,631.70 and 2,621.80

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Solution

The fourth proportional to 5,087.80, 7,631.70 and 2,621.80 is: 3,932.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,087.80 : 7,631.70 = 2,621.80 : x
  2. Step 2: Convert to fraction form
    5,087.80/7,631.70 = 2,621.80/x
  3. Step 3: Cross multiply
    5,087.80x = 7,631.70 × 2,621.80
  4. Step 4: Simplify right side
    5,087.80x = 20,008,791.06
  5. Step 5: Solve for x
    x = 20,008,791.06/5,087.80
  6. Step 6: Final answer
    x = 3,932.70

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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.