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Finding the Fourth Proportional to 6,347.78, 8,760.76 and 3,831.32

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Solution

The fourth proportional to 6,347.78, 8,760.76 and 3,831.32 is: 5,287.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,347.78 : 8,760.76 = 3,831.32 : x
  2. Step 2: Convert to fraction form
    6,347.78/8,760.76 = 3,831.32/x
  3. Step 3: Cross multiply
    6,347.78x = 8,760.76 × 3,831.32
  4. Step 4: Simplify right side
    6,347.78x = 33,565,275.00
  5. Step 5: Solve for x
    x = 33,565,275.00/6,347.78
  6. Step 6: Final answer
    x = 5,287.72

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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.