Home / 1,529.70-2,110.96-831.07

Finding the Fourth Proportional to 1,529.70, 2,110.96 and 831.07

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Solution

The fourth proportional to 1,529.70, 2,110.96 and 831.07 is: 1,146.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.70 : 2,110.96 = 831.07 : x
  2. Step 2: Convert to fraction form
    1,529.70/2,110.96 = 831.07/x
  3. Step 3: Cross multiply
    1,529.70x = 2,110.96 × 831.07
  4. Step 4: Simplify right side
    1,529.70x = 1,754,355.53
  5. Step 5: Solve for x
    x = 1,754,355.53/1,529.70
  6. Step 6: Final answer
    x = 1,146.86

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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.