Home / 8,921.40-12,310.68-4,942.44

Finding the Fourth Proportional to 8,921.40, 12,310.68 and 4,942.44

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Solution

The fourth proportional to 8,921.40, 12,310.68 and 4,942.44 is: 6,820.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.40 : 12,310.68 = 4,942.44 : x
  2. Step 2: Convert to fraction form
    8,921.40/12,310.68 = 4,942.44/x
  3. Step 3: Cross multiply
    8,921.40x = 12,310.68 × 4,942.44
  4. Step 4: Simplify right side
    8,921.40x = 60,844,797.26
  5. Step 5: Solve for x
    x = 60,844,797.26/8,921.40
  6. Step 6: Final answer
    x = 6,820.10

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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.