Home / 2,831.74-3,907.68-1,572.88

Finding the Fourth Proportional to 2,831.74, 3,907.68 and 1,572.88

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Solution

The fourth proportional to 2,831.74, 3,907.68 and 1,572.88 is: 2,170.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.74 : 3,907.68 = 1,572.88 : x
  2. Step 2: Convert to fraction form
    2,831.74/3,907.68 = 1,572.88/x
  3. Step 3: Cross multiply
    2,831.74x = 3,907.68 × 1,572.88
  4. Step 4: Simplify right side
    2,831.74x = 6,146,310.70
  5. Step 5: Solve for x
    x = 6,146,310.70/2,831.74
  6. Step 6: Final answer
    x = 2,170.51

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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.