Home / 3,486.11-5,227.79-1,405.71

Finding the Fourth Proportional to 3,486.11, 5,227.79 and 1,405.71

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Solution

The fourth proportional to 3,486.11, 5,227.79 and 1,405.71 is: 2,108.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.11 : 5,227.79 = 1,405.71 : x
  2. Step 2: Convert to fraction form
    3,486.11/5,227.79 = 1,405.71/x
  3. Step 3: Cross multiply
    3,486.11x = 5,227.79 × 1,405.71
  4. Step 4: Simplify right side
    3,486.11x = 7,348,749.65
  5. Step 5: Solve for x
    x = 7,348,749.65/3,486.11
  6. Step 6: Final answer
    x = 2,108.01

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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.