Home / 7,921.72-11,877.18-4,018.60

Finding the Fourth Proportional to 7,921.72, 11,877.18 and 4,018.60

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Solution

The fourth proportional to 7,921.72, 11,877.18 and 4,018.60 is: 6,025.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.72 : 11,877.18 = 4,018.60 : x
  2. Step 2: Convert to fraction form
    7,921.72/11,877.18 = 4,018.60/x
  3. Step 3: Cross multiply
    7,921.72x = 11,877.18 × 4,018.60
  4. Step 4: Simplify right side
    7,921.72x = 47,729,635.55
  5. Step 5: Solve for x
    x = 47,729,635.55/7,921.72
  6. Step 6: Final answer
    x = 6,025.16

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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.