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Finding the Fourth Proportional to 7,086.58, 10,622.93 and 2,640.99

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Solution

The fourth proportional to 7,086.58, 10,622.93 and 2,640.99 is: 3,958.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,086.58 : 10,622.93 = 2,640.99 : x
  2. Step 2: Convert to fraction form
    7,086.58/10,622.93 = 2,640.99/x
  3. Step 3: Cross multiply
    7,086.58x = 10,622.93 × 2,640.99
  4. Step 4: Simplify right side
    7,086.58x = 28,055,051.90
  5. Step 5: Solve for x
    x = 28,055,051.90/7,086.58
  6. Step 6: Final answer
    x = 3,958.90

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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.