Home / 7,080.14-9,771.10-3,936.80

Finding the Fourth Proportional to 7,080.14, 9,771.10 and 3,936.80

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Solution

The fourth proportional to 7,080.14, 9,771.10 and 3,936.80 is: 5,433.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,080.14 : 9,771.10 = 3,936.80 : x
  2. Step 2: Convert to fraction form
    7,080.14/9,771.10 = 3,936.80/x
  3. Step 3: Cross multiply
    7,080.14x = 9,771.10 × 3,936.80
  4. Step 4: Simplify right side
    7,080.14x = 38,466,807.78
  5. Step 5: Solve for x
    x = 38,466,807.78/7,080.14
  6. Step 6: Final answer
    x = 5,433.06

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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.