Home / 8,112.09-12,137.76-5,777.49

Finding the Fourth Proportional to 8,112.09, 12,137.76 and 5,777.49

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Solution

The fourth proportional to 8,112.09, 12,137.76 and 5,777.49 is: 8,644.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.09 : 12,137.76 = 5,777.49 : x
  2. Step 2: Convert to fraction form
    8,112.09/12,137.76 = 5,777.49/x
  3. Step 3: Cross multiply
    8,112.09x = 12,137.76 × 5,777.49
  4. Step 4: Simplify right side
    8,112.09x = 70,125,787.02
  5. Step 5: Solve for x
    x = 70,125,787.02/8,112.09
  6. Step 6: Final answer
    x = 8,644.60

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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.