Home / 8,389.40-12,584.54-2,149.47

Finding the Fourth Proportional to 8,389.40, 12,584.54 and 2,149.47

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Solution

The fourth proportional to 8,389.40, 12,584.54 and 2,149.47 is: 3,224.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.40 : 12,584.54 = 2,149.47 : x
  2. Step 2: Convert to fraction form
    8,389.40/12,584.54 = 2,149.47/x
  3. Step 3: Cross multiply
    8,389.40x = 12,584.54 × 2,149.47
  4. Step 4: Simplify right side
    8,389.40x = 27,050,096.57
  5. Step 5: Solve for x
    x = 27,050,096.57/8,389.40
  6. Step 6: Final answer
    x = 3,224.32

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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.