Home / 3,108.65-4,655.80-2,831.86

Finding the Fourth Proportional to 3,108.65, 4,655.80 and 2,831.86

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Solution

The fourth proportional to 3,108.65, 4,655.80 and 2,831.86 is: 4,241.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.65 : 4,655.80 = 2,831.86 : x
  2. Step 2: Convert to fraction form
    3,108.65/4,655.80 = 2,831.86/x
  3. Step 3: Cross multiply
    3,108.65x = 4,655.80 × 2,831.86
  4. Step 4: Simplify right side
    3,108.65x = 13,184,591.11
  5. Step 5: Solve for x
    x = 13,184,591.11/3,108.65
  6. Step 6: Final answer
    x = 4,241.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.