Home / 8,530.89-12,799.25-5,205.80

Finding the Fourth Proportional to 8,530.89, 12,799.25 and 5,205.80

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Solution

The fourth proportional to 8,530.89, 12,799.25 and 5,205.80 is: 7,810.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,530.89 : 12,799.25 = 5,205.80 : x
  2. Step 2: Convert to fraction form
    8,530.89/12,799.25 = 5,205.80/x
  3. Step 3: Cross multiply
    8,530.89x = 12,799.25 × 5,205.80
  4. Step 4: Simplify right side
    8,530.89x = 66,630,361.14
  5. Step 5: Solve for x
    x = 66,630,361.14/8,530.89
  6. Step 6: Final answer
    x = 7,810.49

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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.