Home / 8,639.80-12,960.07-3,018.04

Finding the Fourth Proportional to 8,639.80, 12,960.07 and 3,018.04

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Solution

The fourth proportional to 8,639.80, 12,960.07 and 3,018.04 is: 4,527.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.80 : 12,960.07 = 3,018.04 : x
  2. Step 2: Convert to fraction form
    8,639.80/12,960.07 = 3,018.04/x
  3. Step 3: Cross multiply
    8,639.80x = 12,960.07 × 3,018.04
  4. Step 4: Simplify right side
    8,639.80x = 39,114,009.66
  5. Step 5: Solve for x
    x = 39,114,009.66/8,639.80
  6. Step 6: Final answer
    x = 4,527.19

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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.