Home / 8,239.89-12,357.43-4,729.30

Finding the Fourth Proportional to 8,239.89, 12,357.43 and 4,729.30

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Solution

The fourth proportional to 8,239.89, 12,357.43 and 4,729.30 is: 7,092.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.89 : 12,357.43 = 4,729.30 : x
  2. Step 2: Convert to fraction form
    8,239.89/12,357.43 = 4,729.30/x
  3. Step 3: Cross multiply
    8,239.89x = 12,357.43 × 4,729.30
  4. Step 4: Simplify right side
    8,239.89x = 58,441,993.70
  5. Step 5: Solve for x
    x = 58,441,993.70/8,239.89
  6. Step 6: Final answer
    x = 7,092.57

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1.5x scale

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.