Home / 3,392.12-5,087.80-926.80

Finding the Fourth Proportional to 3,392.12, 5,087.80 and 926.80

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Solution

The fourth proportional to 3,392.12, 5,087.80 and 926.80 is: 1,390.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.12 : 5,087.80 = 926.80 : x
  2. Step 2: Convert to fraction form
    3,392.12/5,087.80 = 926.80/x
  3. Step 3: Cross multiply
    3,392.12x = 5,087.80 × 926.80
  4. Step 4: Simplify right side
    3,392.12x = 4,715,373.04
  5. Step 5: Solve for x
    x = 4,715,373.04/3,392.12
  6. Step 6: Final answer
    x = 1,390.10

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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.