Home / 1,228.50-1,831.01-1,159.29

Finding the Fourth Proportional to 1,228.50, 1,831.01 and 1,159.29

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Solution

The fourth proportional to 1,228.50, 1,831.01 and 1,159.29 is: 1,727.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.50 : 1,831.01 = 1,159.29 : x
  2. Step 2: Convert to fraction form
    1,228.50/1,831.01 = 1,159.29/x
  3. Step 3: Cross multiply
    1,228.50x = 1,831.01 × 1,159.29
  4. Step 4: Simplify right side
    1,228.50x = 2,122,665.79
  5. Step 5: Solve for x
    x = 2,122,665.79/1,228.50
  6. Step 6: Final answer
    x = 1,727.85

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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.