Home / 3,686.80-5,529.52-1,089.12

Finding the Fourth Proportional to 3,686.80, 5,529.52 and 1,089.12

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Solution

The fourth proportional to 3,686.80, 5,529.52 and 1,089.12 is: 1,633.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.80 : 5,529.52 = 1,089.12 : x
  2. Step 2: Convert to fraction form
    3,686.80/5,529.52 = 1,089.12/x
  3. Step 3: Cross multiply
    3,686.80x = 5,529.52 × 1,089.12
  4. Step 4: Simplify right side
    3,686.80x = 6,022,310.82
  5. Step 5: Solve for x
    x = 6,022,310.82/3,686.80
  6. Step 6: Final answer
    x = 1,633.48

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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.