Home / 7,212.28-10,818.51-2,831.80

Finding the Fourth Proportional to 7,212.28, 10,818.51 and 2,831.80

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Solution

The fourth proportional to 7,212.28, 10,818.51 and 2,831.80 is: 4,247.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.28 : 10,818.51 = 2,831.80 : x
  2. Step 2: Convert to fraction form
    7,212.28/10,818.51 = 2,831.80/x
  3. Step 3: Cross multiply
    7,212.28x = 10,818.51 × 2,831.80
  4. Step 4: Simplify right side
    7,212.28x = 30,635,856.62
  5. Step 5: Solve for x
    x = 30,635,856.62/7,212.28
  6. Step 6: Final answer
    x = 4,247.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.