Home / 7,784.08-11,671.76-5,321.88

Finding the Fourth Proportional to 7,784.08, 11,671.76 and 5,321.88

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Solution

The fourth proportional to 7,784.08, 11,671.76 and 5,321.88 is: 7,979.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,784.08 : 11,671.76 = 5,321.88 : x
  2. Step 2: Convert to fraction form
    7,784.08/11,671.76 = 5,321.88/x
  3. Step 3: Cross multiply
    7,784.08x = 11,671.76 × 5,321.88
  4. Step 4: Simplify right side
    7,784.08x = 62,115,719.41
  5. Step 5: Solve for x
    x = 62,115,719.41/7,784.08
  6. Step 6: Final answer
    x = 7,979.84

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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.