Home / 3,831.30-5,289.30-3,607.20

Finding the Fourth Proportional to 3,831.30, 5,289.30 and 3,607.20

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Solution

The fourth proportional to 3,831.30, 5,289.30 and 3,607.20 is: 4,979.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.30 : 5,289.30 = 3,607.20 : x
  2. Step 2: Convert to fraction form
    3,831.30/5,289.30 = 3,607.20/x
  3. Step 3: Cross multiply
    3,831.30x = 5,289.30 × 3,607.20
  4. Step 4: Simplify right side
    3,831.30x = 19,079,562.96
  5. Step 5: Solve for x
    x = 19,079,562.96/3,831.30
  6. Step 6: Final answer
    x = 4,979.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.