Home / 8,323.36-12,486.90-3,129.28

Finding the Fourth Proportional to 8,323.36, 12,486.90 and 3,129.28

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Solution

The fourth proportional to 8,323.36, 12,486.90 and 3,129.28 is: 4,694.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,323.36 : 12,486.90 = 3,129.28 : x
  2. Step 2: Convert to fraction form
    8,323.36/12,486.90 = 3,129.28/x
  3. Step 3: Cross multiply
    8,323.36x = 12,486.90 × 3,129.28
  4. Step 4: Simplify right side
    8,323.36x = 39,075,006.43
  5. Step 5: Solve for x
    x = 39,075,006.43/8,323.36
  6. Step 6: Final answer
    x = 4,694.62

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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.