Home / 1,228.48-1,831.79-1,206.64

Finding the Fourth Proportional to 1,228.48, 1,831.79 and 1,206.64

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Solution

The fourth proportional to 1,228.48, 1,831.79 and 1,206.64 is: 1,799.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.48 : 1,831.79 = 1,206.64 : x
  2. Step 2: Convert to fraction form
    1,228.48/1,831.79 = 1,206.64/x
  3. Step 3: Cross multiply
    1,228.48x = 1,831.79 × 1,206.64
  4. Step 4: Simplify right side
    1,228.48x = 2,210,311.09
  5. Step 5: Solve for x
    x = 2,210,311.09/1,228.48
  6. Step 6: Final answer
    x = 1,799.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.