Home / 1,529.73-2,111.02-831.11

Finding the Fourth Proportional to 1,529.73, 2,111.02 and 831.11

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Solution

The fourth proportional to 1,529.73, 2,111.02 and 831.11 is: 1,146.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.73 : 2,111.02 = 831.11 : x
  2. Step 2: Convert to fraction form
    1,529.73/2,111.02 = 831.11/x
  3. Step 3: Cross multiply
    1,529.73x = 2,111.02 × 831.11
  4. Step 4: Simplify right side
    1,529.73x = 1,754,477.20
  5. Step 5: Solve for x
    x = 1,754,477.20/1,529.73
  6. Step 6: Final answer
    x = 1,146.92

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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.