Home / 1,529.88-2,111.24-831.26

Finding the Fourth Proportional to 1,529.88, 2,111.24 and 831.26

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Solution

The fourth proportional to 1,529.88, 2,111.24 and 831.26 is: 1,147.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.88 : 2,111.24 = 831.26 : x
  2. Step 2: Convert to fraction form
    1,529.88/2,111.24 = 831.26/x
  3. Step 3: Cross multiply
    1,529.88x = 2,111.24 × 831.26
  4. Step 4: Simplify right side
    1,529.88x = 1,754,989.36
  5. Step 5: Solve for x
    x = 1,754,989.36/1,529.88
  6. Step 6: Final answer
    x = 1,147.14

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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.