Home / 6,387.89-8,811.70-3,835.00

Finding the Fourth Proportional to 6,387.89, 8,811.70 and 3,835.00

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Solution

The fourth proportional to 6,387.89, 8,811.70 and 3,835.00 is: 5,290.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.89 : 8,811.70 = 3,835.00 : x
  2. Step 2: Convert to fraction form
    6,387.89/8,811.70 = 3,835.00/x
  3. Step 3: Cross multiply
    6,387.89x = 8,811.70 × 3,835.00
  4. Step 4: Simplify right side
    6,387.89x = 33,792,837.88
  5. Step 5: Solve for x
    x = 33,792,837.88/6,387.89
  6. Step 6: Final answer
    x = 5,290.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.