Home / 6,745.20-10,117.80-2,127.60

Finding the Fourth Proportional to 6,745.20, 10,117.80 and 2,127.60

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Solution

The fourth proportional to 6,745.20, 10,117.80 and 2,127.60 is: 3,191.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,745.20 : 10,117.80 = 2,127.60 : x
  2. Step 2: Convert to fraction form
    6,745.20/10,117.80 = 2,127.60/x
  3. Step 3: Cross multiply
    6,745.20x = 10,117.80 × 2,127.60
  4. Step 4: Simplify right side
    6,745.20x = 21,526,631.28
  5. Step 5: Solve for x
    x = 21,526,631.28/6,745.20
  6. Step 6: Final answer
    x = 3,191.40

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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.