Home / 2,831.73-3,907.65-1,572.86

Finding the Fourth Proportional to 2,831.73, 3,907.65 and 1,572.86

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Solution

The fourth proportional to 2,831.73, 3,907.65 and 1,572.86 is: 2,170.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.73 : 3,907.65 = 1,572.86 : x
  2. Step 2: Convert to fraction form
    2,831.73/3,907.65 = 1,572.86/x
  3. Step 3: Cross multiply
    2,831.73x = 3,907.65 × 1,572.86
  4. Step 4: Simplify right side
    2,831.73x = 6,146,196.15
  5. Step 5: Solve for x
    x = 6,146,196.15/2,831.73
  6. Step 6: Final answer
    x = 2,170.47

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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.