Home / 6,399.04-8,831.20-3,604.80

Finding the Fourth Proportional to 6,399.04, 8,831.20 and 3,604.80

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Solution

The fourth proportional to 6,399.04, 8,831.20 and 3,604.80 is: 4,974.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,399.04 : 8,831.20 = 3,604.80 : x
  2. Step 2: Convert to fraction form
    6,399.04/8,831.20 = 3,604.80/x
  3. Step 3: Cross multiply
    6,399.04x = 8,831.20 × 3,604.80
  4. Step 4: Simplify right side
    6,399.04x = 31,834,709.76
  5. Step 5: Solve for x
    x = 31,834,709.76/6,399.04
  6. Step 6: Final answer
    x = 4,974.92

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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.