Home / 8,672.12-13,007.40-2,431.60

Finding the Fourth Proportional to 8,672.12, 13,007.40 and 2,431.60

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Solution

The fourth proportional to 8,672.12, 13,007.40 and 2,431.60 is: 3,647.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.12 : 13,007.40 = 2,431.60 : x
  2. Step 2: Convert to fraction form
    8,672.12/13,007.40 = 2,431.60/x
  3. Step 3: Cross multiply
    8,672.12x = 13,007.40 × 2,431.60
  4. Step 4: Simplify right side
    8,672.12x = 31,628,793.84
  5. Step 5: Solve for x
    x = 31,628,793.84/8,672.12
  6. Step 6: Final answer
    x = 3,647.18

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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.