Home / 7,831.89-11,748.24-3,931.74

Finding the Fourth Proportional to 7,831.89, 11,748.24 and 3,931.74

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Solution

The fourth proportional to 7,831.89, 11,748.24 and 3,931.74 is: 5,897.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.89 : 11,748.24 = 3,931.74 : x
  2. Step 2: Convert to fraction form
    7,831.89/11,748.24 = 3,931.74/x
  3. Step 3: Cross multiply
    7,831.89x = 11,748.24 × 3,931.74
  4. Step 4: Simplify right side
    7,831.89x = 46,191,025.14
  5. Step 5: Solve for x
    x = 46,191,025.14/7,831.89
  6. Step 6: Final answer
    x = 5,897.81

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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.