Home / 8,918.40-13,385.82-4,539

Finding the Fourth Proportional to 8,918.40, 13,385.82 and 4,539

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Solution

The fourth proportional to 8,918.40, 13,385.82 and 4,539 is: 6,812.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.40 : 13,385.82 = 4,539 : x
  2. Step 2: Convert to fraction form
    8,918.40/13,385.82 = 4,539/x
  3. Step 3: Cross multiply
    8,918.40x = 13,385.82 × 4,539
  4. Step 4: Simplify right side
    8,918.40x = 60,758,236.98
  5. Step 5: Solve for x
    x = 60,758,236.98/8,918.40
  6. Step 6: Final answer
    x = 6,812.68

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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.