Home / 5,216.28-7,831.26-3,111.76

Finding the Fourth Proportional to 5,216.28, 7,831.26 and 3,111.76

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Solution

The fourth proportional to 5,216.28, 7,831.26 and 3,111.76 is: 4,671.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216.28 : 7,831.26 = 3,111.76 : x
  2. Step 2: Convert to fraction form
    5,216.28/7,831.26 = 3,111.76/x
  3. Step 3: Cross multiply
    5,216.28x = 7,831.26 × 3,111.76
  4. Step 4: Simplify right side
    5,216.28x = 24,369,001.62
  5. Step 5: Solve for x
    x = 24,369,001.62/5,216.28
  6. Step 6: Final answer
    x = 4,671.72

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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.