Home / 8,641-12,939.60-5,344.08

Finding the Fourth Proportional to 8,641, 12,939.60 and 5,344.08

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Solution

The fourth proportional to 8,641, 12,939.60 and 5,344.08 is: 8,002.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641 : 12,939.60 = 5,344.08 : x
  2. Step 2: Convert to fraction form
    8,641/12,939.60 = 5,344.08/x
  3. Step 3: Cross multiply
    8,641x = 12,939.60 × 5,344.08
  4. Step 4: Simplify right side
    8,641x = 69,150,257.57
  5. Step 5: Solve for x
    x = 69,150,257.57/8,641
  6. Step 6: Final answer
    x = 8,002.58

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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.