Home / 6,815.61-9,405.30-3,831.73

Finding the Fourth Proportional to 6,815.61, 9,405.30 and 3,831.73

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Solution

The fourth proportional to 6,815.61, 9,405.30 and 3,831.73 is: 5,287.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,815.61 : 9,405.30 = 3,831.73 : x
  2. Step 2: Convert to fraction form
    6,815.61/9,405.30 = 3,831.73/x
  3. Step 3: Cross multiply
    6,815.61x = 9,405.30 × 3,831.73
  4. Step 4: Simplify right side
    6,815.61x = 36,038,529.02
  5. Step 5: Solve for x
    x = 36,038,529.02/6,815.61
  6. Step 6: Final answer
    x = 5,287.64

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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.