Home / 1,489.09-2,238.69-1,217.15

Finding the Fourth Proportional to 1,489.09, 2,238.69 and 1,217.15

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Solution

The fourth proportional to 1,489.09, 2,238.69 and 1,217.15 is: 1,829.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.09 : 2,238.69 = 1,217.15 : x
  2. Step 2: Convert to fraction form
    1,489.09/2,238.69 = 1,217.15/x
  3. Step 3: Cross multiply
    1,489.09x = 2,238.69 × 1,217.15
  4. Step 4: Simplify right side
    1,489.09x = 2,724,831.69
  5. Step 5: Solve for x
    x = 2,724,831.69/1,489.09
  6. Step 6: Final answer
    x = 1,829.87

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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.