Home / 2,215.99-3,319.79-1,324.69

Finding the Fourth Proportional to 2,215.99, 3,319.79 and 1,324.69

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Solution

The fourth proportional to 2,215.99, 3,319.79 and 1,324.69 is: 1,984.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.99 : 3,319.79 = 1,324.69 : x
  2. Step 2: Convert to fraction form
    2,215.99/3,319.79 = 1,324.69/x
  3. Step 3: Cross multiply
    2,215.99x = 3,319.79 × 1,324.69
  4. Step 4: Simplify right side
    2,215.99x = 4,397,677.69
  5. Step 5: Solve for x
    x = 4,397,677.69/2,215.99
  6. Step 6: Final answer
    x = 1,984.52

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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.