Home / 8,418.30-12,623.26-4,909.51

Finding the Fourth Proportional to 8,418.30, 12,623.26 and 4,909.51

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Solution

The fourth proportional to 8,418.30, 12,623.26 and 4,909.51 is: 7,361.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.30 : 12,623.26 = 4,909.51 : x
  2. Step 2: Convert to fraction form
    8,418.30/12,623.26 = 4,909.51/x
  3. Step 3: Cross multiply
    8,418.30x = 12,623.26 × 4,909.51
  4. Step 4: Simplify right side
    8,418.30x = 61,973,996.66
  5. Step 5: Solve for x
    x = 61,973,996.66/8,418.30
  6. Step 6: Final answer
    x = 7,361.82

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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.