Home / 6,815.28-9,405.48-3,831.12

Finding the Fourth Proportional to 6,815.28, 9,405.48 and 3,831.12

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Solution

The fourth proportional to 6,815.28, 9,405.48 and 3,831.12 is: 5,287.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,815.28 : 9,405.48 = 3,831.12 : x
  2. Step 2: Convert to fraction form
    6,815.28/9,405.48 = 3,831.12/x
  3. Step 3: Cross multiply
    6,815.28x = 9,405.48 × 3,831.12
  4. Step 4: Simplify right side
    6,815.28x = 36,033,522.54
  5. Step 5: Solve for x
    x = 36,033,522.54/6,815.28
  6. Step 6: Final answer
    x = 5,287.17

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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.