Home / 8,269.40-12,405.47-3,831.50

Finding the Fourth Proportional to 8,269.40, 12,405.47 and 3,831.50

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Solution

The fourth proportional to 8,269.40, 12,405.47 and 3,831.50 is: 5,747.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,269.40 : 12,405.47 = 3,831.50 : x
  2. Step 2: Convert to fraction form
    8,269.40/12,405.47 = 3,831.50/x
  3. Step 3: Cross multiply
    8,269.40x = 12,405.47 × 3,831.50
  4. Step 4: Simplify right side
    8,269.40x = 47,531,539.15
  5. Step 5: Solve for x
    x = 47,531,539.15/8,269.40
  6. Step 6: Final answer
    x = 5,747.88

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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.