Home / 8,387.18-12,580.48-3,453.09

Finding the Fourth Proportional to 8,387.18, 12,580.48 and 3,453.09

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Solution

The fourth proportional to 8,387.18, 12,580.48 and 3,453.09 is: 5,179.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.18 : 12,580.48 = 3,453.09 : x
  2. Step 2: Convert to fraction form
    8,387.18/12,580.48 = 3,453.09/x
  3. Step 3: Cross multiply
    8,387.18x = 12,580.48 × 3,453.09
  4. Step 4: Simplify right side
    8,387.18x = 43,441,521.05
  5. Step 5: Solve for x
    x = 43,441,521.05/8,387.18
  6. Step 6: Final answer
    x = 5,179.52

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1.5x scale

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.