Home / 8,354.36-12,531.30-3,422.60

Finding the Fourth Proportional to 8,354.36, 12,531.30 and 3,422.60

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Solution

The fourth proportional to 8,354.36, 12,531.30 and 3,422.60 is: 5,133.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,354.36 : 12,531.30 = 3,422.60 : x
  2. Step 2: Convert to fraction form
    8,354.36/12,531.30 = 3,422.60/x
  3. Step 3: Cross multiply
    8,354.36x = 12,531.30 × 3,422.60
  4. Step 4: Simplify right side
    8,354.36x = 42,889,627.38
  5. Step 5: Solve for x
    x = 42,889,627.38/8,354.36
  6. Step 6: Final answer
    x = 5,133.80

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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.