Home / 7,831.70-10,806.99-4,687.82

Finding the Fourth Proportional to 7,831.70, 10,806.99 and 4,687.82

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Solution

The fourth proportional to 7,831.70, 10,806.99 and 4,687.82 is: 6,468.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.70 : 10,806.99 = 4,687.82 : x
  2. Step 2: Convert to fraction form
    7,831.70/10,806.99 = 4,687.82/x
  3. Step 3: Cross multiply
    7,831.70x = 10,806.99 × 4,687.82
  4. Step 4: Simplify right side
    7,831.70x = 50,661,223.86
  5. Step 5: Solve for x
    x = 50,661,223.86/7,831.70
  6. Step 6: Final answer
    x = 6,468.74

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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.