Home / 3,220.76-4,831.56-1,272.53

Finding the Fourth Proportional to 3,220.76, 4,831.56 and 1,272.53

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Solution

The fourth proportional to 3,220.76, 4,831.56 and 1,272.53 is: 1,908.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.76 : 4,831.56 = 1,272.53 : x
  2. Step 2: Convert to fraction form
    3,220.76/4,831.56 = 1,272.53/x
  3. Step 3: Cross multiply
    3,220.76x = 4,831.56 × 1,272.53
  4. Step 4: Simplify right side
    3,220.76x = 6,148,280.89
  5. Step 5: Solve for x
    x = 6,148,280.89/3,220.76
  6. Step 6: Final answer
    x = 1,908.96

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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.