Home / 8,187.88-12,285.48-4,291.39

Finding the Fourth Proportional to 8,187.88, 12,285.48 and 4,291.39

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Solution

The fourth proportional to 8,187.88, 12,285.48 and 4,291.39 is: 6,439.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,187.88 : 12,285.48 = 4,291.39 : x
  2. Step 2: Convert to fraction form
    8,187.88/12,285.48 = 4,291.39/x
  3. Step 3: Cross multiply
    8,187.88x = 12,285.48 × 4,291.39
  4. Step 4: Simplify right side
    8,187.88x = 52,721,786.02
  5. Step 5: Solve for x
    x = 52,721,786.02/8,187.88
  6. Step 6: Final answer
    x = 6,439.00

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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.