Home / 3,687.49-5,531.01-1,221.65

Finding the Fourth Proportional to 3,687.49, 5,531.01 and 1,221.65

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Solution

The fourth proportional to 3,687.49, 5,531.01 and 1,221.65 is: 1,832.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.49 : 5,531.01 = 1,221.65 : x
  2. Step 2: Convert to fraction form
    3,687.49/5,531.01 = 1,221.65/x
  3. Step 3: Cross multiply
    3,687.49x = 5,531.01 × 1,221.65
  4. Step 4: Simplify right side
    3,687.49x = 6,756,958.37
  5. Step 5: Solve for x
    x = 6,756,958.37/3,687.49
  6. Step 6: Final answer
    x = 1,832.40

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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.