Home / 8,811.31-13,218.91-4,371.39

Finding the Fourth Proportional to 8,811.31, 13,218.91 and 4,371.39

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Solution

The fourth proportional to 8,811.31, 13,218.91 and 4,371.39 is: 6,558.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.31 : 13,218.91 = 4,371.39 : x
  2. Step 2: Convert to fraction form
    8,811.31/13,218.91 = 4,371.39/x
  3. Step 3: Cross multiply
    8,811.31x = 13,218.91 × 4,371.39
  4. Step 4: Simplify right side
    8,811.31x = 57,785,054.96
  5. Step 5: Solve for x
    x = 57,785,054.96/8,811.31
  6. Step 6: Final answer
    x = 6,558.05

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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.