Home / 8,625.88-12,938.40-2,782.36

Finding the Fourth Proportional to 8,625.88, 12,938.40 and 2,782.36

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Solution

The fourth proportional to 8,625.88, 12,938.40 and 2,782.36 is: 4,173.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.88 : 12,938.40 = 2,782.36 : x
  2. Step 2: Convert to fraction form
    8,625.88/12,938.40 = 2,782.36/x
  3. Step 3: Cross multiply
    8,625.88x = 12,938.40 × 2,782.36
  4. Step 4: Simplify right side
    8,625.88x = 35,999,286.62
  5. Step 5: Solve for x
    x = 35,999,286.62/8,625.88
  6. Step 6: Final answer
    x = 4,173.40

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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.