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Finding the Fourth Proportional to 6,745.85, 10,118.98 and 1,815.50

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Solution

The fourth proportional to 6,745.85, 10,118.98 and 1,815.50 is: 2,723.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,745.85 : 10,118.98 = 1,815.50 : x
  2. Step 2: Convert to fraction form
    6,745.85/10,118.98 = 1,815.50/x
  3. Step 3: Cross multiply
    6,745.85x = 10,118.98 × 1,815.50
  4. Step 4: Simplify right side
    6,745.85x = 18,371,008.19
  5. Step 5: Solve for x
    x = 18,371,008.19/6,745.85
  6. Step 6: Final answer
    x = 2,723.31

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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.