Home / 8,921.36-12,312.22-4,942.84

Finding the Fourth Proportional to 8,921.36, 12,312.22 and 4,942.84

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Solution

The fourth proportional to 8,921.36, 12,312.22 and 4,942.84 is: 6,821.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.36 : 12,312.22 = 4,942.84 : x
  2. Step 2: Convert to fraction form
    8,921.36/12,312.22 = 4,942.84/x
  3. Step 3: Cross multiply
    8,921.36x = 12,312.22 × 4,942.84
  4. Step 4: Simplify right side
    8,921.36x = 60,857,290.37
  5. Step 5: Solve for x
    x = 60,857,290.37/8,921.36
  6. Step 6: Final answer
    x = 6,821.53

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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.