Home / 2,831.87-3,907.80-1,572.93

Finding the Fourth Proportional to 2,831.87, 3,907.80 and 1,572.93

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Solution

The fourth proportional to 2,831.87, 3,907.80 and 1,572.93 is: 2,170.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.87 : 3,907.80 = 1,572.93 : x
  2. Step 2: Convert to fraction form
    2,831.87/3,907.80 = 1,572.93/x
  3. Step 3: Cross multiply
    2,831.87x = 3,907.80 × 1,572.93
  4. Step 4: Simplify right side
    2,831.87x = 6,146,695.85
  5. Step 5: Solve for x
    x = 6,146,695.85/2,831.87
  6. Step 6: Final answer
    x = 2,170.54

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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.