Home / 3,220.28-4,831.12-999.07

Finding the Fourth Proportional to 3,220.28, 4,831.12 and 999.07

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Solution

The fourth proportional to 3,220.28, 4,831.12 and 999.07 is: 1,498.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.28 : 4,831.12 = 999.07 : x
  2. Step 2: Convert to fraction form
    3,220.28/4,831.12 = 999.07/x
  3. Step 3: Cross multiply
    3,220.28x = 4,831.12 × 999.07
  4. Step 4: Simplify right side
    3,220.28x = 4,826,630.60
  5. Step 5: Solve for x
    x = 4,826,630.60/3,220.28
  6. Step 6: Final answer
    x = 1,498.82

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1.5x scale

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.