Home / 8,387.40-12,582.99-2,840.43

Finding the Fourth Proportional to 8,387.40, 12,582.99 and 2,840.43

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Solution

The fourth proportional to 8,387.40, 12,582.99 and 2,840.43 is: 4,261.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.40 : 12,582.99 = 2,840.43 : x
  2. Step 2: Convert to fraction form
    8,387.40/12,582.99 = 2,840.43/x
  3. Step 3: Cross multiply
    8,387.40x = 12,582.99 × 2,840.43
  4. Step 4: Simplify right side
    8,387.40x = 35,741,102.29
  5. Step 5: Solve for x
    x = 35,741,102.29/8,387.40
  6. Step 6: Final answer
    x = 4,261.29

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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.