Home / 1,805.16-2,707.26-831.72

Finding the Fourth Proportional to 1,805.16, 2,707.26 and 831.72

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Solution

The fourth proportional to 1,805.16, 2,707.26 and 831.72 is: 1,247.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,805.16 : 2,707.26 = 831.72 : x
  2. Step 2: Convert to fraction form
    1,805.16/2,707.26 = 831.72/x
  3. Step 3: Cross multiply
    1,805.16x = 2,707.26 × 831.72
  4. Step 4: Simplify right side
    1,805.16x = 2,251,682.29
  5. Step 5: Solve for x
    x = 2,251,682.29/1,805.16
  6. Step 6: Final answer
    x = 1,247.36

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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.