Home / 6,815.52-9,405.20-3,831.36

Finding the Fourth Proportional to 6,815.52, 9,405.20 and 3,831.36

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Solution

The fourth proportional to 6,815.52, 9,405.20 and 3,831.36 is: 5,287.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,815.52 : 9,405.20 = 3,831.36 : x
  2. Step 2: Convert to fraction form
    6,815.52/9,405.20 = 3,831.36/x
  3. Step 3: Cross multiply
    6,815.52x = 9,405.20 × 3,831.36
  4. Step 4: Simplify right side
    6,815.52x = 36,034,707.07
  5. Step 5: Solve for x
    x = 36,034,707.07/6,815.52
  6. Step 6: Final answer
    x = 5,287.15

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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.