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Finding the Fourth Proportional to 3,220.79, 4,831.79 and 1,273.01

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Solution

The fourth proportional to 3,220.79, 4,831.79 and 1,273.01 is: 1,909.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.79 : 4,831.79 = 1,273.01 : x
  2. Step 2: Convert to fraction form
    3,220.79/4,831.79 = 1,273.01/x
  3. Step 3: Cross multiply
    3,220.79x = 4,831.79 × 1,273.01
  4. Step 4: Simplify right side
    3,220.79x = 6,150,886.46
  5. Step 5: Solve for x
    x = 6,150,886.46/3,220.79
  6. Step 6: Final answer
    x = 1,909.75

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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.