Home / 5,220.97-7,831.81-2,101.00

Finding the Fourth Proportional to 5,220.97, 7,831.81 and 2,101.00

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Solution

The fourth proportional to 5,220.97, 7,831.81 and 2,101.00 is: 3,151.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.97 : 7,831.81 = 2,101.00 : x
  2. Step 2: Convert to fraction form
    5,220.97/7,831.81 = 2,101.00/x
  3. Step 3: Cross multiply
    5,220.97x = 7,831.81 × 2,101.00
  4. Step 4: Simplify right side
    5,220.97x = 16,454,647.46
  5. Step 5: Solve for x
    x = 16,454,647.46/5,220.97
  6. Step 6: Final answer
    x = 3,151.65

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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.