Home / 2,831.91-3,908.04-1,572.93

Finding the Fourth Proportional to 2,831.91, 3,908.04 and 1,572.93

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Solution

The fourth proportional to 2,831.91, 3,908.04 and 1,572.93 is: 2,170.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.91 : 3,908.04 = 1,572.93 : x
  2. Step 2: Convert to fraction form
    2,831.91/3,908.04 = 1,572.93/x
  3. Step 3: Cross multiply
    2,831.91x = 3,908.04 × 1,572.93
  4. Step 4: Simplify right side
    2,831.91x = 6,147,073.36
  5. Step 5: Solve for x
    x = 6,147,073.36/2,831.91
  6. Step 6: Final answer
    x = 2,170.65

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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.