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Finding the Fourth Proportional to 6,745.71, 10,118.52 and 2,128.71

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Solution

The fourth proportional to 6,745.71, 10,118.52 and 2,128.71 is: 3,193.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,745.71 : 10,118.52 = 2,128.71 : x
  2. Step 2: Convert to fraction form
    6,745.71/10,118.52 = 2,128.71/x
  3. Step 3: Cross multiply
    6,745.71x = 10,118.52 × 2,128.71
  4. Step 4: Simplify right side
    6,745.71x = 21,539,394.71
  5. Step 5: Solve for x
    x = 21,539,394.71/6,745.71
  6. Step 6: Final answer
    x = 3,193.05

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1.5x scale

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.