Home / 1,223.51-1,831.16-1,207.11

Finding the Fourth Proportional to 1,223.51, 1,831.16 and 1,207.11

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Solution

The fourth proportional to 1,223.51, 1,831.16 and 1,207.11 is: 1,806.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223.51 : 1,831.16 = 1,207.11 : x
  2. Step 2: Convert to fraction form
    1,223.51/1,831.16 = 1,207.11/x
  3. Step 3: Cross multiply
    1,223.51x = 1,831.16 × 1,207.11
  4. Step 4: Simplify right side
    1,223.51x = 2,210,414.57
  5. Step 5: Solve for x
    x = 2,210,414.57/1,223.51
  6. Step 6: Final answer
    x = 1,806.61

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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.