Home / 2,831.30-3,907.21-1,712.98

Finding the Fourth Proportional to 2,831.30, 3,907.21 and 1,712.98

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Solution

The fourth proportional to 2,831.30, 3,907.21 and 1,712.98 is: 2,363.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.30 : 3,907.21 = 1,712.98 : x
  2. Step 2: Convert to fraction form
    2,831.30/3,907.21 = 1,712.98/x
  3. Step 3: Cross multiply
    2,831.30x = 3,907.21 × 1,712.98
  4. Step 4: Simplify right side
    2,831.30x = 6,692,953.05
  5. Step 5: Solve for x
    x = 6,692,953.05/2,831.30
  6. Step 6: Final answer
    x = 2,363.92

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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.