Home / 8,942.40-12,344.40-7,176.60

Finding the Fourth Proportional to 8,942.40, 12,344.40 and 7,176.60

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Solution

The fourth proportional to 8,942.40, 12,344.40 and 7,176.60 is: 9,906.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,942.40 : 12,344.40 = 7,176.60 : x
  2. Step 2: Convert to fraction form
    8,942.40/12,344.40 = 7,176.60/x
  3. Step 3: Cross multiply
    8,942.40x = 12,344.40 × 7,176.60
  4. Step 4: Simplify right side
    8,942.40x = 88,590,821.04
  5. Step 5: Solve for x
    x = 88,590,821.04/8,942.40
  6. Step 6: Final answer
    x = 9,906.83

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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.