Home / 7,135.92-9,847.32-3,949.35

Finding the Fourth Proportional to 7,135.92, 9,847.32 and 3,949.35

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Solution

The fourth proportional to 7,135.92, 9,847.32 and 3,949.35 is: 5,449.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.92 : 9,847.32 = 3,949.35 : x
  2. Step 2: Convert to fraction form
    7,135.92/9,847.32 = 3,949.35/x
  3. Step 3: Cross multiply
    7,135.92x = 9,847.32 × 3,949.35
  4. Step 4: Simplify right side
    7,135.92x = 38,890,444.26
  5. Step 5: Solve for x
    x = 38,890,444.26/7,135.92
  6. Step 6: Final answer
    x = 5,449.96

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1.5x scale

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.