Home / 8,912.43-12,305.12-5,556.60

Finding the Fourth Proportional to 8,912.43, 12,305.12 and 5,556.60

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Solution

The fourth proportional to 8,912.43, 12,305.12 and 5,556.60 is: 7,671.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.43 : 12,305.12 = 5,556.60 : x
  2. Step 2: Convert to fraction form
    8,912.43/12,305.12 = 5,556.60/x
  3. Step 3: Cross multiply
    8,912.43x = 12,305.12 × 5,556.60
  4. Step 4: Simplify right side
    8,912.43x = 68,374,602.01
  5. Step 5: Solve for x
    x = 68,374,602.01/8,912.43
  6. Step 6: Final answer
    x = 7,671.82

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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.