Home / 7,831.38-10,811.97-5,181.06

Finding the Fourth Proportional to 7,831.38, 10,811.97 and 5,181.06

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Solution

The fourth proportional to 7,831.38, 10,811.97 and 5,181.06 is: 7,152.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.38 : 10,811.97 = 5,181.06 : x
  2. Step 2: Convert to fraction form
    7,831.38/10,811.97 = 5,181.06/x
  3. Step 3: Cross multiply
    7,831.38x = 10,811.97 × 5,181.06
  4. Step 4: Simplify right side
    7,831.38x = 56,017,465.29
  5. Step 5: Solve for x
    x = 56,017,465.29/7,831.38
  6. Step 6: Final answer
    x = 7,152.95

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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.