Home / 5,831.27-8,040.80-3,939.57

Finding the Fourth Proportional to 5,831.27, 8,040.80 and 3,939.57

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Solution

The fourth proportional to 5,831.27, 8,040.80 and 3,939.57 is: 5,432.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,831.27 : 8,040.80 = 3,939.57 : x
  2. Step 2: Convert to fraction form
    5,831.27/8,040.80 = 3,939.57/x
  3. Step 3: Cross multiply
    5,831.27x = 8,040.80 × 3,939.57
  4. Step 4: Simplify right side
    5,831.27x = 31,677,274.76
  5. Step 5: Solve for x
    x = 31,677,274.76/5,831.27
  6. Step 6: Final answer
    x = 5,432.32

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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.