Home / 8,915.25-12,306.30-5,189.25

Finding the Fourth Proportional to 8,915.25, 12,306.30 and 5,189.25

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Solution

The fourth proportional to 8,915.25, 12,306.30 and 5,189.25 is: 7,163.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.25 : 12,306.30 = 5,189.25 : x
  2. Step 2: Convert to fraction form
    8,915.25/12,306.30 = 5,189.25/x
  3. Step 3: Cross multiply
    8,915.25x = 12,306.30 × 5,189.25
  4. Step 4: Simplify right side
    8,915.25x = 63,860,467.28
  5. Step 5: Solve for x
    x = 63,860,467.28/8,915.25
  6. Step 6: Final answer
    x = 7,163.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.