Home / 8,076.78-12,115.44-3,695.76

Finding the Fourth Proportional to 8,076.78, 12,115.44 and 3,695.76

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Solution

The fourth proportional to 8,076.78, 12,115.44 and 3,695.76 is: 5,543.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,076.78 : 12,115.44 = 3,695.76 : x
  2. Step 2: Convert to fraction form
    8,076.78/12,115.44 = 3,695.76/x
  3. Step 3: Cross multiply
    8,076.78x = 12,115.44 × 3,695.76
  4. Step 4: Simplify right side
    8,076.78x = 44,775,758.53
  5. Step 5: Solve for x
    x = 44,775,758.53/8,076.78
  6. Step 6: Final answer
    x = 5,543.76

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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.