Home / 3,118.80-4,274.70-3,097.20

Finding the Fourth Proportional to 3,118.80, 4,274.70 and 3,097.20

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Solution

The fourth proportional to 3,118.80, 4,274.70 and 3,097.20 is: 4,245.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.80 : 4,274.70 = 3,097.20 : x
  2. Step 2: Convert to fraction form
    3,118.80/4,274.70 = 3,097.20/x
  3. Step 3: Cross multiply
    3,118.80x = 4,274.70 × 3,097.20
  4. Step 4: Simplify right side
    3,118.80x = 13,239,600.84
  5. Step 5: Solve for x
    x = 13,239,600.84/3,118.80
  6. Step 6: Final answer
    x = 4,245.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.