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Finding the Fourth Proportional to 6,745.42, 10,118.82 and 1,815.10

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Solution

The fourth proportional to 6,745.42, 10,118.82 and 1,815.10 is: 2,722.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,745.42 : 10,118.82 = 1,815.10 : x
  2. Step 2: Convert to fraction form
    6,745.42/10,118.82 = 1,815.10/x
  3. Step 3: Cross multiply
    6,745.42x = 10,118.82 × 1,815.10
  4. Step 4: Simplify right side
    6,745.42x = 18,366,670.18
  5. Step 5: Solve for x
    x = 18,366,670.18/6,745.42
  6. Step 6: Final answer
    x = 2,722.84

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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.