Home / 7,831.15-11,749.80-3,445.53

Finding the Fourth Proportional to 7,831.15, 11,749.80 and 3,445.53

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Solution

The fourth proportional to 7,831.15, 11,749.80 and 3,445.53 is: 5,169.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.15 : 11,749.80 = 3,445.53 : x
  2. Step 2: Convert to fraction form
    7,831.15/11,749.80 = 3,445.53/x
  3. Step 3: Cross multiply
    7,831.15x = 11,749.80 × 3,445.53
  4. Step 4: Simplify right side
    7,831.15x = 40,484,288.39
  5. Step 5: Solve for x
    x = 40,484,288.39/7,831.15
  6. Step 6: Final answer
    x = 5,169.65

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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.