Home / 7,930.31-11,887.49-4,421.86

Finding the Fourth Proportional to 7,930.31, 11,887.49 and 4,421.86

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Solution

The fourth proportional to 7,930.31, 11,887.49 and 4,421.86 is: 6,628.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,930.31 : 11,887.49 = 4,421.86 : x
  2. Step 2: Convert to fraction form
    7,930.31/11,887.49 = 4,421.86/x
  3. Step 3: Cross multiply
    7,930.31x = 11,887.49 × 4,421.86
  4. Step 4: Simplify right side
    7,930.31x = 52,564,797.87
  5. Step 5: Solve for x
    x = 52,564,797.87/7,930.31
  6. Step 6: Final answer
    x = 6,628.35

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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.