Home / 3,220.08-4,831.29-1,680

Finding the Fourth Proportional to 3,220.08, 4,831.29 and 1,680

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Solution

The fourth proportional to 3,220.08, 4,831.29 and 1,680 is: 2,520.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.08 : 4,831.29 = 1,680 : x
  2. Step 2: Convert to fraction form
    3,220.08/4,831.29 = 1,680/x
  3. Step 3: Cross multiply
    3,220.08x = 4,831.29 × 1,680
  4. Step 4: Simplify right side
    3,220.08x = 8,116,567.20
  5. Step 5: Solve for x
    x = 8,116,567.20/3,220.08
  6. Step 6: Final answer
    x = 2,520.61

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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.