Home / 3,561.20-5,340.20-1,369.20

Finding the Fourth Proportional to 3,561.20, 5,340.20 and 1,369.20

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Solution

The fourth proportional to 3,561.20, 5,340.20 and 1,369.20 is: 2,053.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.20 : 5,340.20 = 1,369.20 : x
  2. Step 2: Convert to fraction form
    3,561.20/5,340.20 = 1,369.20/x
  3. Step 3: Cross multiply
    3,561.20x = 5,340.20 × 1,369.20
  4. Step 4: Simplify right side
    3,561.20x = 7,311,801.84
  5. Step 5: Solve for x
    x = 7,311,801.84/3,561.20
  6. Step 6: Final answer
    x = 2,053.18

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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.