Home / 2,145.69-3,214.94-1,487.79

Finding the Fourth Proportional to 2,145.69, 3,214.94 and 1,487.79

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Solution

The fourth proportional to 2,145.69, 3,214.94 and 1,487.79 is: 2,229.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.69 : 3,214.94 = 1,487.79 : x
  2. Step 2: Convert to fraction form
    2,145.69/3,214.94 = 1,487.79/x
  3. Step 3: Cross multiply
    2,145.69x = 3,214.94 × 1,487.79
  4. Step 4: Simplify right side
    2,145.69x = 4,783,148.14
  5. Step 5: Solve for x
    x = 4,783,148.14/2,145.69
  6. Step 6: Final answer
    x = 2,229.19

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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.