Home / 2,199.38-3,035.13-1,315.22

Finding the Fourth Proportional to 2,199.38, 3,035.13 and 1,315.22

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Solution

The fourth proportional to 2,199.38, 3,035.13 and 1,315.22 is: 1,814.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199.38 : 3,035.13 = 1,315.22 : x
  2. Step 2: Convert to fraction form
    2,199.38/3,035.13 = 1,315.22/x
  3. Step 3: Cross multiply
    2,199.38x = 3,035.13 × 1,315.22
  4. Step 4: Simplify right side
    2,199.38x = 3,991,863.68
  5. Step 5: Solve for x
    x = 3,991,863.68/2,199.38
  6. Step 6: Final answer
    x = 1,814.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.